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Finding the Fourth Proportional to 660,302.80, 990,454.20 and 239,426.80

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Solution

The fourth proportional to 660,302.80, 990,454.20 and 239,426.80 is: 359,140.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,302.80 : 990,454.20 = 239,426.80 : x
  2. Step 2: Convert to fraction form
    660,302.80/990,454.20 = 239,426.80/x
  3. Step 3: Cross multiply
    660,302.80x = 990,454.20 × 239,426.80
  4. Step 4: Simplify right side
    660,302.80x = 237,141,279,652.56
  5. Step 5: Solve for x
    x = 237,141,279,652.56/660,302.80
  6. Step 6: Final answer
    x = 359,140.20

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Similar ratio
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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.