Home / 498,450.72-687,851.28-272,100

Finding the Fourth Proportional to 498,450.72, 687,851.28 and 272,100

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Solution

The fourth proportional to 498,450.72, 687,851.28 and 272,100 is: 375,492.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,450.72 : 687,851.28 = 272,100 : x
  2. Step 2: Convert to fraction form
    498,450.72/687,851.28 = 272,100/x
  3. Step 3: Cross multiply
    498,450.72x = 687,851.28 × 272,100
  4. Step 4: Simplify right side
    498,450.72x = 187,164,333,288
  5. Step 5: Solve for x
    x = 187,164,333,288/498,450.72
  6. Step 6: Final answer
    x = 375,492.15

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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.