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Finding the Fourth Proportional to 485,937.71, 728,923.65 and 130,960.21

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Solution

The fourth proportional to 485,937.71, 728,923.65 and 130,960.21 is: 196,444.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,937.71 : 728,923.65 = 130,960.21 : x
  2. Step 2: Convert to fraction form
    485,937.71/728,923.65 = 130,960.21/x
  3. Step 3: Cross multiply
    485,937.71x = 728,923.65 × 130,960.21
  4. Step 4: Simplify right side
    485,937.71x = 95,459,994,277.97
  5. Step 5: Solve for x
    x = 95,459,994,277.97/485,937.71
  6. Step 6: Final answer
    x = 196,444.92

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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.