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Finding the Fourth Proportional to 447,265.16, 670,755.58 and 147,689.90

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Solution

The fourth proportional to 447,265.16, 670,755.58 and 147,689.90 is: 221,487.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,265.16 : 670,755.58 = 147,689.90 : x
  2. Step 2: Convert to fraction form
    447,265.16/670,755.58 = 147,689.90/x
  3. Step 3: Cross multiply
    447,265.16x = 670,755.58 × 147,689.90
  4. Step 4: Simplify right side
    447,265.16x = 99,063,824,534.64
  5. Step 5: Solve for x
    x = 99,063,824,534.64/447,265.16
  6. Step 6: Final answer
    x = 221,487.91

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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.