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Finding the Fourth Proportional to 454,407.42, 681,612.75 and 138,863.01

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Solution

The fourth proportional to 454,407.42, 681,612.75 and 138,863.01 is: 208,295.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,407.42 : 681,612.75 = 138,863.01 : x
  2. Step 2: Convert to fraction form
    454,407.42/681,612.75 = 138,863.01/x
  3. Step 3: Cross multiply
    454,407.42x = 681,612.75 × 138,863.01
  4. Step 4: Simplify right side
    454,407.42x = 94,650,798,119.38
  5. Step 5: Solve for x
    x = 94,650,798,119.38/454,407.42
  6. Step 6: Final answer
    x = 208,295.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.