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Finding the Fourth Proportional to 720,147.16, 1,080,221.10 and 187,666.84

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Solution

The fourth proportional to 720,147.16, 1,080,221.10 and 187,666.84 is: 281,500.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,147.16 : 1,080,221.10 = 187,666.84 : x
  2. Step 2: Convert to fraction form
    720,147.16/1,080,221.10 = 187,666.84/x
  3. Step 3: Cross multiply
    720,147.16x = 1,080,221.10 × 187,666.84
  4. Step 4: Simplify right side
    720,147.16x = 202,721,680,338.32
  5. Step 5: Solve for x
    x = 202,721,680,338.32/720,147.16
  6. Step 6: Final answer
    x = 281,500.35

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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.