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Finding the Fourth Proportional to 343,535.58, 515,061.92 and 151,318.78

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Solution

The fourth proportional to 343,535.58, 515,061.92 and 151,318.78 is: 226,871.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,535.58 : 515,061.92 = 151,318.78 : x
  2. Step 2: Convert to fraction form
    343,535.58/515,061.92 = 151,318.78/x
  3. Step 3: Cross multiply
    343,535.58x = 515,061.92 × 151,318.78
  4. Step 4: Simplify right side
    343,535.58x = 77,938,540,602.26
  5. Step 5: Solve for x
    x = 77,938,540,602.26/343,535.58
  6. Step 6: Final answer
    x = 226,871.82

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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.