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Finding the Fourth Proportional to 186,387.36, 279,561.60 and 53,259

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Solution

The fourth proportional to 186,387.36, 279,561.60 and 53,259 is: 79,882.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,387.36 : 279,561.60 = 53,259 : x
  2. Step 2: Convert to fraction form
    186,387.36/279,561.60 = 53,259/x
  3. Step 3: Cross multiply
    186,387.36x = 279,561.60 × 53,259
  4. Step 4: Simplify right side
    186,387.36x = 14,889,171,254.40
  5. Step 5: Solve for x
    x = 14,889,171,254.40/186,387.36
  6. Step 6: Final answer
    x = 79,882.95

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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.