Home / 387,914,240,433.90-535,244,012,729.85-216,609,814,214.42

Finding the Fourth Proportional to 387,914,240,433.90, 535,244,012,729.85 and 216,609,814,214.42

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Solution

The fourth proportional to 387,914,240,433.90, 535,244,012,729.85 and 216,609,814,214.42 is: 298,878,190,259.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,914,240,433.90 : 535,244,012,729.85 = 216,609,814,214.42 : x
  2. Step 2: Convert to fraction form
    387,914,240,433.90/535,244,012,729.85 = 216,609,814,214.42/x
  3. Step 3: Cross multiply
    387,914,240,433.90x = 535,244,012,729.85 × 216,609,814,214.42
  4. Step 4: Simplify right side
    387,914,240,433.90x = 115,939,106,156,793,470,910,464
  5. Step 5: Solve for x
    x = 115,939,106,156,793,470,910,464/387,914,240,433.90
  6. Step 6: Final answer
    x = 298,878,190,259.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.