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Finding the Fourth Proportional to 324,748.20, 487,122.30 and 266,428.20

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Solution

The fourth proportional to 324,748.20, 487,122.30 and 266,428.20 is: 399,642.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,748.20 : 487,122.30 = 266,428.20 : x
  2. Step 2: Convert to fraction form
    324,748.20/487,122.30 = 266,428.20/x
  3. Step 3: Cross multiply
    324,748.20x = 487,122.30 × 266,428.20
  4. Step 4: Simplify right side
    324,748.20x = 129,783,117,568.86
  5. Step 5: Solve for x
    x = 129,783,117,568.86/324,748.20
  6. Step 6: Final answer
    x = 399,642.30

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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.