Home / 278,766.45-418,313.70-101,291.40

Finding the Fourth Proportional to 278,766.45, 418,313.70 and 101,291.40

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Solution

The fourth proportional to 278,766.45, 418,313.70 and 101,291.40 is: 151,996.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,766.45 : 418,313.70 = 101,291.40 : x
  2. Step 2: Convert to fraction form
    278,766.45/418,313.70 = 101,291.40/x
  3. Step 3: Cross multiply
    278,766.45x = 418,313.70 × 101,291.40
  4. Step 4: Simplify right side
    278,766.45x = 42,371,580,312.18
  5. Step 5: Solve for x
    x = 42,371,580,312.18/278,766.45
  6. Step 6: Final answer
    x = 151,996.70

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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.