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Finding the Fourth Proportional to 440,031.20, 660,041.22 and 140,507.99

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Solution

The fourth proportional to 440,031.20, 660,041.22 and 140,507.99 is: 210,760.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,031.20 : 660,041.22 = 140,507.99 : x
  2. Step 2: Convert to fraction form
    440,031.20/660,041.22 = 140,507.99/x
  3. Step 3: Cross multiply
    440,031.20x = 660,041.22 × 140,507.99
  4. Step 4: Simplify right side
    440,031.20x = 92,741,065,139.35
  5. Step 5: Solve for x
    x = 92,741,065,139.35/440,031.20
  6. Step 6: Final answer
    x = 210,760.20

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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.