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Finding the Fourth Proportional to 484,909.66, 669,127.40 and 270,069.72

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Solution

The fourth proportional to 484,909.66, 669,127.40 and 270,069.72 is: 372,669.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,909.66 : 669,127.40 = 270,069.72 : x
  2. Step 2: Convert to fraction form
    484,909.66/669,127.40 = 270,069.72/x
  3. Step 3: Cross multiply
    484,909.66x = 669,127.40 × 270,069.72
  4. Step 4: Simplify right side
    484,909.66x = 180,711,049,562.33
  5. Step 5: Solve for x
    x = 180,711,049,562.33/484,909.66
  6. Step 6: Final answer
    x = 372,669.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.