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Finding the Fourth Proportional to 252,279.21, 348,143.43 and 137,559.82

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Solution

The fourth proportional to 252,279.21, 348,143.43 and 137,559.82 is: 189,831.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,279.21 : 348,143.43 = 137,559.82 : x
  2. Step 2: Convert to fraction form
    252,279.21/348,143.43 = 137,559.82/x
  3. Step 3: Cross multiply
    252,279.21x = 348,143.43 × 137,559.82
  4. Step 4: Simplify right side
    252,279.21x = 47,890,547,564.98
  5. Step 5: Solve for x
    x = 47,890,547,564.98/252,279.21
  6. Step 6: Final answer
    x = 189,831.53

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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.