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Finding the Fourth Proportional to 484,668.28, 727,012.12 and 129,681.72

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Solution

The fourth proportional to 484,668.28, 727,012.12 and 129,681.72 is: 194,525.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,668.28 : 727,012.12 = 129,681.72 : x
  2. Step 2: Convert to fraction form
    484,668.28/727,012.12 = 129,681.72/x
  3. Step 3: Cross multiply
    484,668.28x = 727,012.12 × 129,681.72
  4. Step 4: Simplify right side
    484,668.28x = 94,280,182,182.45
  5. Step 5: Solve for x
    x = 94,280,182,182.45/484,668.28
  6. Step 6: Final answer
    x = 194,525.18

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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.