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Finding the Fourth Proportional to 484,547.68, 726,764.28 and 129,589.21

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Solution

The fourth proportional to 484,547.68, 726,764.28 and 129,589.21 is: 194,368.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,547.68 : 726,764.28 = 129,589.21 : x
  2. Step 2: Convert to fraction form
    484,547.68/726,764.28 = 129,589.21/x
  3. Step 3: Cross multiply
    484,547.68x = 726,764.28 × 129,589.21
  4. Step 4: Simplify right side
    484,547.68x = 94,180,808,901.42
  5. Step 5: Solve for x
    x = 94,180,808,901.42/484,547.68
  6. Step 6: Final answer
    x = 194,368.51

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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.