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Finding the Fourth Proportional to 440,400.80, 660,601.20 and 230,011.40

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Solution

The fourth proportional to 440,400.80, 660,601.20 and 230,011.40 is: 345,017.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,400.80 : 660,601.20 = 230,011.40 : x
  2. Step 2: Convert to fraction form
    440,400.80/660,601.20 = 230,011.40/x
  3. Step 3: Cross multiply
    440,400.80x = 660,601.20 × 230,011.40
  4. Step 4: Simplify right side
    440,400.80x = 151,945,806,853.68
  5. Step 5: Solve for x
    x = 151,945,806,853.68/440,400.80
  6. Step 6: Final answer
    x = 345,017.10

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1.5x scale

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.