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Finding the Fourth Proportional to 372,503.55, 558,551.21 and 147,636.21

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Solution

The fourth proportional to 372,503.55, 558,551.21 and 147,636.21 is: 221,373.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,503.55 : 558,551.21 = 147,636.21 : x
  2. Step 2: Convert to fraction form
    372,503.55/558,551.21 = 147,636.21/x
  3. Step 3: Cross multiply
    372,503.55x = 558,551.21 × 147,636.21
  4. Step 4: Simplify right side
    372,503.55x = 82,462,382,997.13
  5. Step 5: Solve for x
    x = 82,462,382,997.13/372,503.55
  6. Step 6: Final answer
    x = 221,373.42

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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.