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Finding the Fourth Proportional to 391,423.19, 587,274.71 and 241,488.95

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Solution

The fourth proportional to 391,423.19, 587,274.71 and 241,488.95 is: 362,319.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,423.19 : 587,274.71 = 241,488.95 : x
  2. Step 2: Convert to fraction form
    391,423.19/587,274.71 = 241,488.95/x
  3. Step 3: Cross multiply
    391,423.19x = 587,274.71 × 241,488.95
  4. Step 4: Simplify right side
    391,423.19x = 141,820,348,935.64
  5. Step 5: Solve for x
    x = 141,820,348,935.64/391,423.19
  6. Step 6: Final answer
    x = 362,319.75

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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.