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Finding the Fourth Proportional to 265,425.24, 398,136.78 and 218,579.16

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Solution

The fourth proportional to 265,425.24, 398,136.78 and 218,579.16 is: 327,867.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,425.24 : 398,136.78 = 218,579.16 : x
  2. Step 2: Convert to fraction form
    265,425.24/398,136.78 = 218,579.16/x
  3. Step 3: Cross multiply
    265,425.24x = 398,136.78 × 218,579.16
  4. Step 4: Simplify right side
    265,425.24x = 87,024,402,937.50
  5. Step 5: Solve for x
    x = 87,024,402,937.50/265,425.24
  6. Step 6: Final answer
    x = 327,867.85

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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.