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Finding the Fourth Proportional to 347,817.70, 521,726.55 and 148,144.60

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Solution

The fourth proportional to 347,817.70, 521,726.55 and 148,144.60 is: 222,216.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,817.70 : 521,726.55 = 148,144.60 : x
  2. Step 2: Convert to fraction form
    347,817.70/521,726.55 = 148,144.60/x
  3. Step 3: Cross multiply
    347,817.70x = 521,726.55 × 148,144.60
  4. Step 4: Simplify right side
    347,817.70x = 77,290,971,059.13
  5. Step 5: Solve for x
    x = 77,290,971,059.13/347,817.70
  6. Step 6: Final answer
    x = 222,216.90

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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.