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Finding the Fourth Proportional to 305,496.20, 458,244.30 and 266,130.20

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Solution

The fourth proportional to 305,496.20, 458,244.30 and 266,130.20 is: 399,195.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,496.20 : 458,244.30 = 266,130.20 : x
  2. Step 2: Convert to fraction form
    305,496.20/458,244.30 = 266,130.20/x
  3. Step 3: Cross multiply
    305,496.20x = 458,244.30 × 266,130.20
  4. Step 4: Simplify right side
    305,496.20x = 121,952,647,207.86
  5. Step 5: Solve for x
    x = 121,952,647,207.86/305,496.20
  6. Step 6: Final answer
    x = 399,195.30

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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.