Home / 279,220.64-385,331.85-158,339.07

Finding the Fourth Proportional to 279,220.64, 385,331.85 and 158,339.07

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Solution

The fourth proportional to 279,220.64, 385,331.85 and 158,339.07 is: 218,512.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,220.64 : 385,331.85 = 158,339.07 : x
  2. Step 2: Convert to fraction form
    279,220.64/385,331.85 = 158,339.07/x
  3. Step 3: Cross multiply
    279,220.64x = 385,331.85 × 158,339.07
  4. Step 4: Simplify right side
    279,220.64x = 61,013,086,770.38
  5. Step 5: Solve for x
    x = 61,013,086,770.38/279,220.64
  6. Step 6: Final answer
    x = 218,512.10

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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.