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Finding the Fourth Proportional to 342,700.16, 472,869.80 and 215,285.52

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Solution

The fourth proportional to 342,700.16, 472,869.80 and 215,285.52 is: 297,058.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,700.16 : 472,869.80 = 215,285.52 : x
  2. Step 2: Convert to fraction form
    342,700.16/472,869.80 = 215,285.52/x
  3. Step 3: Cross multiply
    342,700.16x = 472,869.80 × 215,285.52
  4. Step 4: Simplify right side
    342,700.16x = 101,802,020,785.30
  5. Step 5: Solve for x
    x = 101,802,020,785.30/342,700.16
  6. Step 6: Final answer
    x = 297,058.57

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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.