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Finding the Fourth Proportional to 278,503.11, 417,734.01 and 88,955.82

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Solution

The fourth proportional to 278,503.11, 417,734.01 and 88,955.82 is: 133,427.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,503.11 : 417,734.01 = 88,955.82 : x
  2. Step 2: Convert to fraction form
    278,503.11/417,734.01 = 88,955.82/x
  3. Step 3: Cross multiply
    278,503.11x = 417,734.01 × 88,955.82
  4. Step 4: Simplify right side
    278,503.11x = 37,159,871,401.44
  5. Step 5: Solve for x
    x = 37,159,871,401.44/278,503.11
  6. Step 6: Final answer
    x = 133,427.13

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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.