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Finding the Fourth Proportional to 342,381.79, 472,551.74 and 229,400.83

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Solution

The fourth proportional to 342,381.79, 472,551.74 and 229,400.83 is: 316,616.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,381.79 : 472,551.74 = 229,400.83 : x
  2. Step 2: Convert to fraction form
    342,381.79/472,551.74 = 229,400.83/x
  3. Step 3: Cross multiply
    342,381.79x = 472,551.74 × 229,400.83
  4. Step 4: Simplify right side
    342,381.79x = 108,403,761,373.94
  5. Step 5: Solve for x
    x = 108,403,761,373.94/342,381.79
  6. Step 6: Final answer
    x = 316,616.61

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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.