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Finding the Fourth Proportional to 484,417.80, 726,693.66 and 129,443.40

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Solution

The fourth proportional to 484,417.80, 726,693.66 and 129,443.40 is: 194,182.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,417.80 : 726,693.66 = 129,443.40 : x
  2. Step 2: Convert to fraction form
    484,417.80/726,693.66 = 129,443.40/x
  3. Step 3: Cross multiply
    484,417.80x = 726,693.66 × 129,443.40
  4. Step 4: Simplify right side
    484,417.80x = 94,065,698,108.84
  5. Step 5: Solve for x
    x = 94,065,698,108.84/484,417.80
  6. Step 6: Final answer
    x = 194,182.99

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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.