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Finding the Fourth Proportional to 423,386.96, 635,073.24 and 198,695.12

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Solution

The fourth proportional to 423,386.96, 635,073.24 and 198,695.12 is: 298,039.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,386.96 : 635,073.24 = 198,695.12 : x
  2. Step 2: Convert to fraction form
    423,386.96/635,073.24 = 198,695.12/x
  3. Step 3: Cross multiply
    423,386.96x = 635,073.24 × 198,695.12
  4. Step 4: Simplify right side
    423,386.96x = 126,185,953,630.59
  5. Step 5: Solve for x
    x = 126,185,953,630.59/423,386.96
  6. Step 6: Final answer
    x = 298,039.30

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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.