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Finding the Fourth Proportional to 342,740.39, 472,914.52 and 215,342.17

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Solution

The fourth proportional to 342,740.39, 472,914.52 and 215,342.17 is: 297,129.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,740.39 : 472,914.52 = 215,342.17 : x
  2. Step 2: Convert to fraction form
    342,740.39/472,914.52 = 215,342.17/x
  3. Step 3: Cross multiply
    342,740.39x = 472,914.52 × 215,342.17
  4. Step 4: Simplify right side
    342,740.39x = 101,838,437,240.67
  5. Step 5: Solve for x
    x = 101,838,437,240.67/342,740.39
  6. Step 6: Final answer
    x = 297,129.96

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.