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Finding the Fourth Proportional to 342,691.36, 472,897.92 and 189,718.72

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Solution

The fourth proportional to 342,691.36, 472,897.92 and 189,718.72 is: 261,802.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,691.36 : 472,897.92 = 189,718.72 : x
  2. Step 2: Convert to fraction form
    342,691.36/472,897.92 = 189,718.72/x
  3. Step 3: Cross multiply
    342,691.36x = 472,897.92 × 189,718.72
  4. Step 4: Simplify right side
    342,691.36x = 89,717,588,073.06
  5. Step 5: Solve for x
    x = 89,717,588,073.06/342,691.36
  6. Step 6: Final answer
    x = 261,802.89

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1.5x scale

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.