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Finding the Fourth Proportional to 478,158.54, 659,863.16 and 263,306.31

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Solution

The fourth proportional to 478,158.54, 659,863.16 and 263,306.31 is: 363,365.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,158.54 : 659,863.16 = 263,306.31 : x
  2. Step 2: Convert to fraction form
    478,158.54/659,863.16 = 263,306.31/x
  3. Step 3: Cross multiply
    478,158.54x = 659,863.16 × 263,306.31
  4. Step 4: Simplify right side
    478,158.54x = 173,746,133,764.54
  5. Step 5: Solve for x
    x = 173,746,133,764.54/478,158.54
  6. Step 6: Final answer
    x = 363,365.12

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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.