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Finding the Fourth Proportional to 478,583.25, 660,436.42 and 260,793.85

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Solution

The fourth proportional to 478,583.25, 660,436.42 and 260,793.85 is: 359,890.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,583.25 : 660,436.42 = 260,793.85 : x
  2. Step 2: Convert to fraction form
    478,583.25/660,436.42 = 260,793.85/x
  3. Step 3: Cross multiply
    478,583.25x = 660,436.42 × 260,793.85
  4. Step 4: Simplify right side
    478,583.25x = 172,237,754,780.77
  5. Step 5: Solve for x
    x = 172,237,754,780.77/478,583.25
  6. Step 6: Final answer
    x = 359,890.89

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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.