Home / 278,645.62-384,294.09-187,987.18

Finding the Fourth Proportional to 278,645.62, 384,294.09 and 187,987.18

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Solution

The fourth proportional to 278,645.62, 384,294.09 and 187,987.18 is: 259,262.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,645.62 : 384,294.09 = 187,987.18 : x
  2. Step 2: Convert to fraction form
    278,645.62/384,294.09 = 187,987.18/x
  3. Step 3: Cross multiply
    278,645.62x = 384,294.09 × 187,987.18
  4. Step 4: Simplify right side
    278,645.62x = 72,242,362,269.77
  5. Step 5: Solve for x
    x = 72,242,362,269.77/278,645.62
  6. Step 6: Final answer
    x = 259,262.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.