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Finding the Fourth Proportional to 347,748.40, 521,201.40 and 147,648.70

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Solution

The fourth proportional to 347,748.40, 521,201.40 and 147,648.70 is: 221,294.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,748.40 : 521,201.40 = 147,648.70 : x
  2. Step 2: Convert to fraction form
    347,748.40/521,201.40 = 147,648.70/x
  3. Step 3: Cross multiply
    347,748.40x = 521,201.40 × 147,648.70
  4. Step 4: Simplify right side
    347,748.40x = 76,954,709,148.18
  5. Step 5: Solve for x
    x = 76,954,709,148.18/347,748.40
  6. Step 6: Final answer
    x = 221,294.21

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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.