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Finding the Fourth Proportional to 521,523.60, 719,718.45 and 292,080.30

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Solution

The fourth proportional to 521,523.60, 719,718.45 and 292,080.30 is: 403,079.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,523.60 : 719,718.45 = 292,080.30 : x
  2. Step 2: Convert to fraction form
    521,523.60/719,718.45 = 292,080.30/x
  3. Step 3: Cross multiply
    521,523.60x = 719,718.45 × 292,080.30
  4. Step 4: Simplify right side
    521,523.60x = 210,215,580,791.54
  5. Step 5: Solve for x
    x = 210,215,580,791.54/521,523.60
  6. Step 6: Final answer
    x = 403,079.71

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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.