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Finding the Fourth Proportional to 257,368.32, 386,034.24 and 79,871.04

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Solution

The fourth proportional to 257,368.32, 386,034.24 and 79,871.04 is: 119,800.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,368.32 : 386,034.24 = 79,871.04 : x
  2. Step 2: Convert to fraction form
    257,368.32/386,034.24 = 79,871.04/x
  3. Step 3: Cross multiply
    257,368.32x = 386,034.24 × 79,871.04
  4. Step 4: Simplify right side
    257,368.32x = 30,832,956,224.41
  5. Step 5: Solve for x
    x = 30,832,956,224.41/257,368.32
  6. Step 6: Final answer
    x = 119,800.90

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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.