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Finding the Fourth Proportional to 475,240.80, 711,694.80 and 316,610.40

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Solution

The fourth proportional to 475,240.80, 711,694.80 and 316,610.40 is: 474,138.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,240.80 : 711,694.80 = 316,610.40 : x
  2. Step 2: Convert to fraction form
    475,240.80/711,694.80 = 316,610.40/x
  3. Step 3: Cross multiply
    475,240.80x = 711,694.80 × 316,610.40
  4. Step 4: Simplify right side
    475,240.80x = 225,329,975,305.92
  5. Step 5: Solve for x
    x = 225,329,975,305.92/475,240.80
  6. Step 6: Final answer
    x = 474,138.53

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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.