Home / 279,084.78-385,135.02-151,760.40

Finding the Fourth Proportional to 279,084.78, 385,135.02 and 151,760.40

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Solution

The fourth proportional to 279,084.78, 385,135.02 and 151,760.40 is: 209,428.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,084.78 : 385,135.02 = 151,760.40 : x
  2. Step 2: Convert to fraction form
    279,084.78/385,135.02 = 151,760.40/x
  3. Step 3: Cross multiply
    279,084.78x = 385,135.02 × 151,760.40
  4. Step 4: Simplify right side
    279,084.78x = 58,448,244,689.21
  5. Step 5: Solve for x
    x = 58,448,244,689.21/279,084.78
  6. Step 6: Final answer
    x = 209,428.28

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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.