Home / 279,435.75-385,621.38-152,112.30

Finding the Fourth Proportional to 279,435.75, 385,621.38 and 152,112.30

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Solution

The fourth proportional to 279,435.75, 385,621.38 and 152,112.30 is: 209,915.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,435.75 : 385,621.38 = 152,112.30 : x
  2. Step 2: Convert to fraction form
    279,435.75/385,621.38 = 152,112.30/x
  3. Step 3: Cross multiply
    279,435.75x = 385,621.38 × 152,112.30
  4. Step 4: Simplify right side
    279,435.75x = 58,657,755,040.97
  5. Step 5: Solve for x
    x = 58,657,755,040.97/279,435.75
  6. Step 6: Final answer
    x = 209,915.00

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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.