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Finding the Fourth Proportional to 279,040.59, 418,307.76 and 101,422.17

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Solution

The fourth proportional to 279,040.59, 418,307.76 and 101,422.17 is: 152,041.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,040.59 : 418,307.76 = 101,422.17 : x
  2. Step 2: Convert to fraction form
    279,040.59/418,307.76 = 101,422.17/x
  3. Step 3: Cross multiply
    279,040.59x = 418,307.76 × 101,422.17
  4. Step 4: Simplify right side
    279,040.59x = 42,425,680,747.04
  5. Step 5: Solve for x
    x = 42,425,680,747.04/279,040.59
  6. Step 6: Final answer
    x = 152,041.25

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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.