Home / 478,212.60-659,935.31-287,229.18

Finding the Fourth Proportional to 478,212.60, 659,935.31 and 287,229.18

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Solution

The fourth proportional to 478,212.60, 659,935.31 and 287,229.18 is: 396,377.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,212.60 : 659,935.31 = 287,229.18 : x
  2. Step 2: Convert to fraction form
    478,212.60/659,935.31 = 287,229.18/x
  3. Step 3: Cross multiply
    478,212.60x = 659,935.31 × 287,229.18
  4. Step 4: Simplify right side
    478,212.60x = 189,552,676,508.20
  5. Step 5: Solve for x
    x = 189,552,676,508.20/478,212.60
  6. Step 6: Final answer
    x = 396,377.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.