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Finding the Fourth Proportional to 386,472.70, 579,449.85 and 176,002.30

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Solution

The fourth proportional to 386,472.70, 579,449.85 and 176,002.30 is: 263,885.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,472.70 : 579,449.85 = 176,002.30 : x
  2. Step 2: Convert to fraction form
    386,472.70/579,449.85 = 176,002.30/x
  3. Step 3: Cross multiply
    386,472.70x = 579,449.85 × 176,002.30
  4. Step 4: Simplify right side
    386,472.70x = 101,984,506,334.66
  5. Step 5: Solve for x
    x = 101,984,506,334.66/386,472.70
  6. Step 6: Final answer
    x = 263,885.41

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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.