Home / 278,581.51-418,038.27-101,102.36

Finding the Fourth Proportional to 278,581.51, 418,038.27 and 101,102.36

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Solution

The fourth proportional to 278,581.51, 418,038.27 and 101,102.36 is: 151,713.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,581.51 : 418,038.27 = 101,102.36 : x
  2. Step 2: Convert to fraction form
    278,581.51/418,038.27 = 101,102.36/x
  3. Step 3: Cross multiply
    278,581.51x = 418,038.27 × 101,102.36
  4. Step 4: Simplify right side
    278,581.51x = 42,264,653,766.69
  5. Step 5: Solve for x
    x = 42,264,653,766.69/278,581.51
  6. Step 6: Final answer
    x = 151,713.78

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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.