Home / 278,988.10-385,001.97-158,152.18

Finding the Fourth Proportional to 278,988.10, 385,001.97 and 158,152.18

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Solution

The fourth proportional to 278,988.10, 385,001.97 and 158,152.18 is: 218,249.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,988.10 : 385,001.97 = 158,152.18 : x
  2. Step 2: Convert to fraction form
    278,988.10/385,001.97 = 158,152.18/x
  3. Step 3: Cross multiply
    278,988.10x = 385,001.97 × 158,152.18
  4. Step 4: Simplify right side
    278,988.10x = 60,888,900,859.79
  5. Step 5: Solve for x
    x = 60,888,900,859.79/278,988.10
  6. Step 6: Final answer
    x = 218,249.10

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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.