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Finding the Fourth Proportional to 440,140.80, 660,259.80 and 140,570.40

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Solution

The fourth proportional to 440,140.80, 660,259.80 and 140,570.40 is: 210,871.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,140.80 : 660,259.80 = 140,570.40 : x
  2. Step 2: Convert to fraction form
    440,140.80/660,259.80 = 140,570.40/x
  3. Step 3: Cross multiply
    440,140.80x = 660,259.80 × 140,570.40
  4. Step 4: Simplify right side
    440,140.80x = 92,812,984,189.92
  5. Step 5: Solve for x
    x = 92,812,984,189.92/440,140.80
  6. Step 6: Final answer
    x = 210,871.12

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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.