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Finding the Fourth Proportional to 391,870.30, 587,805.45 and 241,623.40

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Solution

The fourth proportional to 391,870.30, 587,805.45 and 241,623.40 is: 362,435.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,870.30 : 587,805.45 = 241,623.40 : x
  2. Step 2: Convert to fraction form
    391,870.30/587,805.45 = 241,623.40/x
  3. Step 3: Cross multiply
    391,870.30x = 587,805.45 × 241,623.40
  4. Step 4: Simplify right side
    391,870.30x = 142,027,551,367.53
  5. Step 5: Solve for x
    x = 142,027,551,367.53/391,870.30
  6. Step 6: Final answer
    x = 362,435.10

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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.