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Finding the Fourth Proportional to 660,601.80, 990,708.30 and 187,328.52

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Solution

The fourth proportional to 660,601.80, 990,708.30 and 187,328.52 is: 280,937.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,601.80 : 990,708.30 = 187,328.52 : x
  2. Step 2: Convert to fraction form
    660,601.80/990,708.30 = 187,328.52/x
  3. Step 3: Cross multiply
    660,601.80x = 990,708.30 × 187,328.52
  4. Step 4: Simplify right side
    660,601.80x = 185,587,919,590.72
  5. Step 5: Solve for x
    x = 185,587,919,590.72/660,601.80
  6. Step 6: Final answer
    x = 280,937.65

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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.