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Finding the Fourth Proportional to 531,640.80, 797,185.80 and 157,615.20

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Solution

The fourth proportional to 531,640.80, 797,185.80 and 157,615.20 is: 236,341.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,640.80 : 797,185.80 = 157,615.20 : x
  2. Step 2: Convert to fraction form
    531,640.80/797,185.80 = 157,615.20/x
  3. Step 3: Cross multiply
    531,640.80x = 797,185.80 × 157,615.20
  4. Step 4: Simplify right side
    531,640.80x = 125,648,599,304.16
  5. Step 5: Solve for x
    x = 125,648,599,304.16/531,640.80
  6. Step 6: Final answer
    x = 236,341.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.