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Finding the Fourth Proportional to 440,285.40, 660,243.42 and 140,685.84

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Solution

The fourth proportional to 440,285.40, 660,243.42 and 140,685.84 is: 210,969.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,285.40 : 660,243.42 = 140,685.84 : x
  2. Step 2: Convert to fraction form
    440,285.40/660,243.42 = 140,685.84/x
  3. Step 3: Cross multiply
    440,285.40x = 660,243.42 × 140,685.84
  4. Step 4: Simplify right side
    440,285.40x = 92,886,900,147.17
  5. Step 5: Solve for x
    x = 92,886,900,147.17/440,285.40
  6. Step 6: Final answer
    x = 210,969.75

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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.