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Finding the Fourth Proportional to 350,486, 526,826.40 and 231,308.78

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Solution

The fourth proportional to 350,486, 526,826.40 and 231,308.78 is: 347,687.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    350,486 : 526,826.40 = 231,308.78 : x
  2. Step 2: Convert to fraction form
    350,486/526,826.40 = 231,308.78/x
  3. Step 3: Cross multiply
    350,486x = 526,826.40 × 231,308.78
  4. Step 4: Simplify right side
    350,486x = 121,859,571,855.79
  5. Step 5: Solve for x
    x = 121,859,571,855.79/350,486
  6. Step 6: Final answer
    x = 347,687.42

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1.5x scale

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.