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Finding the Fourth Proportional to 252,408.76, 348,330.66 and 137,689.36

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Solution

The fourth proportional to 252,408.76, 348,330.66 and 137,689.36 is: 190,014.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,408.76 : 348,330.66 = 137,689.36 : x
  2. Step 2: Convert to fraction form
    252,408.76/348,330.66 = 137,689.36/x
  3. Step 3: Cross multiply
    252,408.76x = 348,330.66 × 137,689.36
  4. Step 4: Simplify right side
    252,408.76x = 47,961,425,643.78
  5. Step 5: Solve for x
    x = 47,961,425,643.78/252,408.76
  6. Step 6: Final answer
    x = 190,014.90

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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.