Home / 281,104.28-387,923.88-153,780.80

Finding the Fourth Proportional to 281,104.28, 387,923.88 and 153,780.80

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Solution

The fourth proportional to 281,104.28, 387,923.88 and 153,780.80 is: 212,217.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,104.28 : 387,923.88 = 153,780.80 : x
  2. Step 2: Convert to fraction form
    281,104.28/387,923.88 = 153,780.80/x
  3. Step 3: Cross multiply
    281,104.28x = 387,923.88 × 153,780.80
  4. Step 4: Simplify right side
    281,104.28x = 59,655,244,605.50
  5. Step 5: Solve for x
    x = 59,655,244,605.50/281,104.28
  6. Step 6: Final answer
    x = 212,217.49

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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.