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Finding the Fourth Proportional to 398,760.60, 597,935.70 and 118,241.40

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Solution

The fourth proportional to 398,760.60, 597,935.70 and 118,241.40 is: 177,301.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,760.60 : 597,935.70 = 118,241.40 : x
  2. Step 2: Convert to fraction form
    398,760.60/597,935.70 = 118,241.40/x
  3. Step 3: Cross multiply
    398,760.60x = 597,935.70 × 118,241.40
  4. Step 4: Simplify right side
    398,760.60x = 70,700,754,277.98
  5. Step 5: Solve for x
    x = 70,700,754,277.98/398,760.60
  6. Step 6: Final answer
    x = 177,301.25

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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.