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Finding the Fourth Proportional to 660,526.80, 990,788.38 and 187,216.26

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Solution

The fourth proportional to 660,526.80, 990,788.38 and 187,216.26 is: 280,823.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,526.80 : 990,788.38 = 187,216.26 : x
  2. Step 2: Convert to fraction form
    660,526.80/990,788.38 = 187,216.26/x
  3. Step 3: Cross multiply
    660,526.80x = 990,788.38 × 187,216.26
  4. Step 4: Simplify right side
    660,526.80x = 185,491,694,955.06
  5. Step 5: Solve for x
    x = 185,491,694,955.06/660,526.80
  6. Step 6: Final answer
    x = 280,823.87

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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.