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Finding the Fourth Proportional to 660,581.60, 990,872.40 and 187,271.08

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Solution

The fourth proportional to 660,581.60, 990,872.40 and 187,271.08 is: 280,906.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,581.60 : 990,872.40 = 187,271.08 : x
  2. Step 2: Convert to fraction form
    660,581.60/990,872.40 = 187,271.08/x
  3. Step 3: Cross multiply
    660,581.60x = 990,872.40 × 187,271.08
  4. Step 4: Simplify right side
    660,581.60x = 185,561,744,490.19
  5. Step 5: Solve for x
    x = 185,561,744,490.19/660,581.60
  6. Step 6: Final answer
    x = 280,906.62

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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.