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Finding the Fourth Proportional to 342,718.92, 473,123.70 and 215,464.68

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Solution

The fourth proportional to 342,718.92, 473,123.70 and 215,464.68 is: 297,449.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,718.92 : 473,123.70 = 215,464.68 : x
  2. Step 2: Convert to fraction form
    342,718.92/473,123.70 = 215,464.68/x
  3. Step 3: Cross multiply
    342,718.92x = 473,123.70 × 215,464.68
  4. Step 4: Simplify right side
    342,718.92x = 101,941,446,620.92
  5. Step 5: Solve for x
    x = 101,941,446,620.92/342,718.92
  6. Step 6: Final answer
    x = 297,449.14

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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.