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Finding the Fourth Proportional to 342,705, 472,087.87 and 291,553.91

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Solution

The fourth proportional to 342,705, 472,087.87 and 291,553.91 is: 401,625.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,705 : 472,087.87 = 291,553.91 : x
  2. Step 2: Convert to fraction form
    342,705/472,087.87 = 291,553.91/x
  3. Step 3: Cross multiply
    342,705x = 472,087.87 × 291,553.91
  4. Step 4: Simplify right side
    342,705x = 137,639,061,272.75
  5. Step 5: Solve for x
    x = 137,639,061,272.75/342,705
  6. Step 6: Final answer
    x = 401,625.48

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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.