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Finding the Fourth Proportional to 478,583.38, 717,198.31 and 265,445.19

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Solution

The fourth proportional to 478,583.38, 717,198.31 and 265,445.19 is: 397,792.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,583.38 : 717,198.31 = 265,445.19 : x
  2. Step 2: Convert to fraction form
    478,583.38/717,198.31 = 265,445.19/x
  3. Step 3: Cross multiply
    478,583.38x = 717,198.31 × 265,445.19
  4. Step 4: Simplify right side
    478,583.38x = 190,376,841,002.02
  5. Step 5: Solve for x
    x = 190,376,841,002.02/478,583.38
  6. Step 6: Final answer
    x = 397,792.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.