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Finding the Fourth Proportional to 440,530.47, 660,472.48 and 140,838.57

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Solution

The fourth proportional to 440,530.47, 660,472.48 and 140,838.57 is: 211,154.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,530.47 : 660,472.48 = 140,838.57 : x
  2. Step 2: Convert to fraction form
    440,530.47/660,472.48 = 140,838.57/x
  3. Step 3: Cross multiply
    440,530.47x = 660,472.48 × 140,838.57
  4. Step 4: Simplify right side
    440,530.47x = 93,019,999,607.55
  5. Step 5: Solve for x
    x = 93,019,999,607.55/440,530.47
  6. Step 6: Final answer
    x = 211,154.52

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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.