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Finding the Fourth Proportional to 403,918.80, 605,876.36 and 104,373.92

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Solution

The fourth proportional to 403,918.80, 605,876.36 and 104,373.92 is: 156,560.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,918.80 : 605,876.36 = 104,373.92 : x
  2. Step 2: Convert to fraction form
    403,918.80/605,876.36 = 104,373.92/x
  3. Step 3: Cross multiply
    403,918.80x = 605,876.36 × 104,373.92
  4. Step 4: Simplify right side
    403,918.80x = 63,237,687,177.28
  5. Step 5: Solve for x
    x = 63,237,687,177.28/403,918.80
  6. Step 6: Final answer
    x = 156,560.40

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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.