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Finding the Fourth Proportional to 278,570.34, 418,058.42 and 101,091.65

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Solution

The fourth proportional to 278,570.34, 418,058.42 and 101,091.65 is: 151,711.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,570.34 : 418,058.42 = 101,091.65 : x
  2. Step 2: Convert to fraction form
    278,570.34/418,058.42 = 101,091.65/x
  3. Step 3: Cross multiply
    278,570.34x = 418,058.42 × 101,091.65
  4. Step 4: Simplify right side
    278,570.34x = 42,262,212,878.44
  5. Step 5: Solve for x
    x = 42,262,212,878.44/278,570.34
  6. Step 6: Final answer
    x = 151,711.10

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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.