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Finding the Fourth Proportional to 395,407.32, 592,711.58 and 155,689.42

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Solution

The fourth proportional to 395,407.32, 592,711.58 and 155,689.42 is: 233,376.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,407.32 : 592,711.58 = 155,689.42 : x
  2. Step 2: Convert to fraction form
    395,407.32/592,711.58 = 155,689.42/x
  3. Step 3: Cross multiply
    395,407.32x = 592,711.58 × 155,689.42
  4. Step 4: Simplify right side
    395,407.32x = 92,278,919,593.51
  5. Step 5: Solve for x
    x = 92,278,919,593.51/395,407.32
  6. Step 6: Final answer
    x = 233,376.86

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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.