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Finding the Fourth Proportional to 281,113.70, 421,670.55 and 268,672.10

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Solution

The fourth proportional to 281,113.70, 421,670.55 and 268,672.10 is: 403,008.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,113.70 : 421,670.55 = 268,672.10 : x
  2. Step 2: Convert to fraction form
    281,113.70/421,670.55 = 268,672.10/x
  3. Step 3: Cross multiply
    281,113.70x = 421,670.55 × 268,672.10
  4. Step 4: Simplify right side
    281,113.70x = 113,291,112,176.66
  5. Step 5: Solve for x
    x = 113,291,112,176.66/281,113.70
  6. Step 6: Final answer
    x = 403,008.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.