Home / 279,436.13-385,621.90-152,112.68

Finding the Fourth Proportional to 279,436.13, 385,621.90 and 152,112.68

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Solution

The fourth proportional to 279,436.13, 385,621.90 and 152,112.68 is: 209,915.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,436.13 : 385,621.90 = 152,112.68 : x
  2. Step 2: Convert to fraction form
    279,436.13/385,621.90 = 152,112.68/x
  3. Step 3: Cross multiply
    279,436.13x = 385,621.90 × 152,112.68
  4. Step 4: Simplify right side
    279,436.13x = 58,657,978,367.30
  5. Step 5: Solve for x
    x = 58,657,978,367.30/279,436.13
  6. Step 6: Final answer
    x = 209,915.52

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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.