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Finding the Fourth Proportional to 478,045.45, 659,689.92 and 263,187.13

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Solution

The fourth proportional to 478,045.45, 659,689.92 and 263,187.13 is: 363,191.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,045.45 : 659,689.92 = 263,187.13 : x
  2. Step 2: Convert to fraction form
    478,045.45/659,689.92 = 263,187.13/x
  3. Step 3: Cross multiply
    478,045.45x = 659,689.92 × 263,187.13
  4. Step 4: Simplify right side
    478,045.45x = 173,621,896,734.73
  5. Step 5: Solve for x
    x = 173,621,896,734.73/478,045.45
  6. Step 6: Final answer
    x = 363,191.19

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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.