Home / 387,914,240,441.92-535,244,012,740.88-216,609,814,222.40

Finding the Fourth Proportional to 387,914,240,441.92, 535,244,012,740.88 and 216,609,814,222.40

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Solution

The fourth proportional to 387,914,240,441.92, 535,244,012,740.88 and 216,609,814,222.40 is: 298,878,190,270.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,914,240,441.92 : 535,244,012,740.88 = 216,609,814,222.40 : x
  2. Step 2: Convert to fraction form
    387,914,240,441.92/535,244,012,740.88 = 216,609,814,222.40/x
  3. Step 3: Cross multiply
    387,914,240,441.92x = 535,244,012,740.88 × 216,609,814,222.40
  4. Step 4: Simplify right side
    387,914,240,441.92x = 115,939,106,163,453,908,221,952
  5. Step 5: Solve for x
    x = 115,939,106,163,453,908,221,952/387,914,240,441.92
  6. Step 6: Final answer
    x = 298,878,190,270.55

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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.