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Finding the Fourth Proportional to 342,702.16, 472,872.56 and 215,287.52

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Solution

The fourth proportional to 342,702.16, 472,872.56 and 215,287.52 is: 297,061.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,702.16 : 472,872.56 = 215,287.52 : x
  2. Step 2: Convert to fraction form
    342,702.16/472,872.56 = 215,287.52/x
  3. Step 3: Cross multiply
    342,702.16x = 472,872.56 × 215,287.52
  4. Step 4: Simplify right side
    342,702.16x = 101,803,560,718.45
  5. Step 5: Solve for x
    x = 101,803,560,718.45/342,702.16
  6. Step 6: Final answer
    x = 297,061.33

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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.