Home / 487,631.80-731,447.70-155,241.40

Finding the Fourth Proportional to 487,631.80, 731,447.70 and 155,241.40

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Solution

The fourth proportional to 487,631.80, 731,447.70 and 155,241.40 is: 232,862.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,631.80 : 731,447.70 = 155,241.40 : x
  2. Step 2: Convert to fraction form
    487,631.80/731,447.70 = 155,241.40/x
  3. Step 3: Cross multiply
    487,631.80x = 731,447.70 × 155,241.40
  4. Step 4: Simplify right side
    487,631.80x = 113,550,964,974.78
  5. Step 5: Solve for x
    x = 113,550,964,974.78/487,631.80
  6. Step 6: Final answer
    x = 232,862.10

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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.