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Finding the Fourth Proportional to 347,687.60, 521,531.40 and 315,028.40

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Solution

The fourth proportional to 347,687.60, 521,531.40 and 315,028.40 is: 472,542.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,687.60 : 521,531.40 = 315,028.40 : x
  2. Step 2: Convert to fraction form
    347,687.60/521,531.40 = 315,028.40/x
  3. Step 3: Cross multiply
    347,687.60x = 521,531.40 × 315,028.40
  4. Step 4: Simplify right side
    347,687.60x = 164,297,202,491.76
  5. Step 5: Solve for x
    x = 164,297,202,491.76/347,687.60
  6. Step 6: Final answer
    x = 472,542.60

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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.