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Finding the Fourth Proportional to 342,516.64, 472,691.28 and 191,587.36

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Solution

The fourth proportional to 342,516.64, 472,691.28 and 191,587.36 is: 264,400.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,516.64 : 472,691.28 = 191,587.36 : x
  2. Step 2: Convert to fraction form
    342,516.64/472,691.28 = 191,587.36/x
  3. Step 3: Cross multiply
    342,516.64x = 472,691.28 × 191,587.36
  4. Step 4: Simplify right side
    342,516.64x = 90,561,674,430.22
  5. Step 5: Solve for x
    x = 90,561,674,430.22/342,516.64
  6. Step 6: Final answer
    x = 264,400.80

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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.