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Finding the Fourth Proportional to 252,487.76, 348,440.40 and 139,317.80

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Solution

The fourth proportional to 252,487.76, 348,440.40 and 139,317.80 is: 192,262.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,487.76 : 348,440.40 = 139,317.80 : x
  2. Step 2: Convert to fraction form
    252,487.76/348,440.40 = 139,317.80/x
  3. Step 3: Cross multiply
    252,487.76x = 348,440.40 × 139,317.80
  4. Step 4: Simplify right side
    252,487.76x = 48,543,948,609.16
  5. Step 5: Solve for x
    x = 48,543,948,609.16/252,487.76
  6. Step 6: Final answer
    x = 192,262.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.