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Finding the Fourth Proportional to 475,139.28, 711,950.76 and 348,191.22

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Solution

The fourth proportional to 475,139.28, 711,950.76 and 348,191.22 is: 521,731.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,139.28 : 711,950.76 = 348,191.22 : x
  2. Step 2: Convert to fraction form
    475,139.28/711,950.76 = 348,191.22/x
  3. Step 3: Cross multiply
    475,139.28x = 711,950.76 × 348,191.22
  4. Step 4: Simplify right side
    475,139.28x = 247,895,003,704.33
  5. Step 5: Solve for x
    x = 247,895,003,704.33/475,139.28
  6. Step 6: Final answer
    x = 521,731.24

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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.