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Finding the Fourth Proportional to 279,266.60, 418,916.10 and 79,601.60

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Solution

The fourth proportional to 279,266.60, 418,916.10 and 79,601.60 is: 119,407.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,266.60 : 418,916.10 = 79,601.60 : x
  2. Step 2: Convert to fraction form
    279,266.60/418,916.10 = 79,601.60/x
  3. Step 3: Cross multiply
    279,266.60x = 418,916.10 × 79,601.60
  4. Step 4: Simplify right side
    279,266.60x = 33,346,391,825.76
  5. Step 5: Solve for x
    x = 33,346,391,825.76/279,266.60
  6. Step 6: Final answer
    x = 119,407.02

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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.