Home / 281,109.22-387,930.63-153,784.90

Finding the Fourth Proportional to 281,109.22, 387,930.63 and 153,784.90

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Solution

The fourth proportional to 281,109.22, 387,930.63 and 153,784.90 is: 212,223.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,109.22 : 387,930.63 = 153,784.90 : x
  2. Step 2: Convert to fraction form
    281,109.22/387,930.63 = 153,784.90/x
  3. Step 3: Cross multiply
    281,109.22x = 387,930.63 × 153,784.90
  4. Step 4: Simplify right side
    281,109.22x = 59,657,873,141.49
  5. Step 5: Solve for x
    x = 59,657,873,141.49/281,109.22
  6. Step 6: Final answer
    x = 212,223.11

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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.