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Finding the Fourth Proportional to 391,247.59, 586,955.58 and 121,370.35

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Solution

The fourth proportional to 391,247.59, 586,955.58 and 121,370.35 is: 182,081.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,247.59 : 586,955.58 = 121,370.35 : x
  2. Step 2: Convert to fraction form
    391,247.59/586,955.58 = 121,370.35/x
  3. Step 3: Cross multiply
    391,247.59x = 586,955.58 × 121,370.35
  4. Step 4: Simplify right side
    391,247.59x = 71,239,004,179.05
  5. Step 5: Solve for x
    x = 71,239,004,179.05/391,247.59
  6. Step 6: Final answer
    x = 182,081.64

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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.