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Finding the Fourth Proportional to 440,070.40, 660,251.40 and 140,597.20

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Solution

The fourth proportional to 440,070.40, 660,251.40 and 140,597.20 is: 210,942.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,070.40 : 660,251.40 = 140,597.20 : x
  2. Step 2: Convert to fraction form
    440,070.40/660,251.40 = 140,597.20/x
  3. Step 3: Cross multiply
    440,070.40x = 660,251.40 × 140,597.20
  4. Step 4: Simplify right side
    440,070.40x = 92,829,498,136.08
  5. Step 5: Solve for x
    x = 92,829,498,136.08/440,070.40
  6. Step 6: Final answer
    x = 210,942.38

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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.