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Finding the Fourth Proportional to 472,207.71, 707,925.60 and 219,645.66

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Solution

The fourth proportional to 472,207.71, 707,925.60 and 219,645.66 is: 329,288.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,207.71 : 707,925.60 = 219,645.66 : x
  2. Step 2: Convert to fraction form
    472,207.71/707,925.60 = 219,645.66/x
  3. Step 3: Cross multiply
    472,207.71x = 707,925.60 × 219,645.66
  4. Step 4: Simplify right side
    472,207.71x = 155,492,785,642.90
  5. Step 5: Solve for x
    x = 155,492,785,642.90/472,207.71
  6. Step 6: Final answer
    x = 329,288.96

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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.