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Finding the Fourth Proportional to 381,917.17, 572,055.65 and 359,559.26

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Solution

The fourth proportional to 381,917.17, 572,055.65 and 359,559.26 is: 538,566.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,917.17 : 572,055.65 = 359,559.26 : x
  2. Step 2: Convert to fraction form
    381,917.17/572,055.65 = 359,559.26/x
  3. Step 3: Cross multiply
    381,917.17x = 572,055.65 × 359,559.26
  4. Step 4: Simplify right side
    381,917.17x = 205,687,906,192.82
  5. Step 5: Solve for x
    x = 205,687,906,192.82/381,917.17
  6. Step 6: Final answer
    x = 538,566.79

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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.