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Finding the Fourth Proportional to 478,339.56, 660,084.24 and 263,475

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Solution

The fourth proportional to 478,339.56, 660,084.24 and 263,475 is: 363,582.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,339.56 : 660,084.24 = 263,475 : x
  2. Step 2: Convert to fraction form
    478,339.56/660,084.24 = 263,475/x
  3. Step 3: Cross multiply
    478,339.56x = 660,084.24 × 263,475
  4. Step 4: Simplify right side
    478,339.56x = 173,915,695,134
  5. Step 5: Solve for x
    x = 173,915,695,134/478,339.56
  6. Step 6: Final answer
    x = 363,582.09

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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.