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Finding the Fourth Proportional to 279,278.60, 418,898.70 and 89,736.20

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Solution

The fourth proportional to 279,278.60, 418,898.70 and 89,736.20 is: 134,598.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,278.60 : 418,898.70 = 89,736.20 : x
  2. Step 2: Convert to fraction form
    279,278.60/418,898.70 = 89,736.20/x
  3. Step 3: Cross multiply
    279,278.60x = 418,898.70 × 89,736.20
  4. Step 4: Simplify right side
    279,278.60x = 37,590,377,522.94
  5. Step 5: Solve for x
    x = 37,590,377,522.94/279,278.60
  6. Step 6: Final answer
    x = 134,598.13

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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.