Home / 279,445.82-385,635.20-152,121.38

Finding the Fourth Proportional to 279,445.82, 385,635.20 and 152,121.38

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Solution

The fourth proportional to 279,445.82, 385,635.20 and 152,121.38 is: 209,927.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,445.82 : 385,635.20 = 152,121.38 : x
  2. Step 2: Convert to fraction form
    279,445.82/385,635.20 = 152,121.38/x
  3. Step 3: Cross multiply
    279,445.82x = 385,635.20 × 152,121.38
  4. Step 4: Simplify right side
    279,445.82x = 58,663,356,111.79
  5. Step 5: Solve for x
    x = 58,663,356,111.79/279,445.82
  6. Step 6: Final answer
    x = 209,927.48

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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.