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Finding the Fourth Proportional to 475,703.29, 712,155.25 and 317,539.45

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Solution

The fourth proportional to 475,703.29, 712,155.25 and 317,539.45 is: 475,374.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,703.29 : 712,155.25 = 317,539.45 : x
  2. Step 2: Convert to fraction form
    475,703.29/712,155.25 = 317,539.45/x
  3. Step 3: Cross multiply
    475,703.29x = 712,155.25 × 317,539.45
  4. Step 4: Simplify right side
    475,703.29x = 226,137,386,399.61
  5. Step 5: Solve for x
    x = 226,137,386,399.61/475,703.29
  6. Step 6: Final answer
    x = 475,374.86

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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.