Home / 285,312.83-393,731.46-157,988.42

Finding the Fourth Proportional to 285,312.83, 393,731.46 and 157,988.42

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Solution

The fourth proportional to 285,312.83, 393,731.46 and 157,988.42 is: 218,023.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,312.83 : 393,731.46 = 157,988.42 : x
  2. Step 2: Convert to fraction form
    285,312.83/393,731.46 = 157,988.42/x
  3. Step 3: Cross multiply
    285,312.83x = 393,731.46 × 157,988.42
  4. Step 4: Simplify right side
    285,312.83x = 62,205,011,269.69
  5. Step 5: Solve for x
    x = 62,205,011,269.69/285,312.83
  6. Step 6: Final answer
    x = 218,023.88

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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.