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Finding the Fourth Proportional to 375,778.20, 518,773.50 and 255,561.24

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Solution

The fourth proportional to 375,778.20, 518,773.50 and 255,561.24 is: 352,810.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,778.20 : 518,773.50 = 255,561.24 : x
  2. Step 2: Convert to fraction form
    375,778.20/518,773.50 = 255,561.24/x
  3. Step 3: Cross multiply
    375,778.20x = 518,773.50 × 255,561.24
  4. Step 4: Simplify right side
    375,778.20x = 132,578,398,939.14
  5. Step 5: Solve for x
    x = 132,578,398,939.14/375,778.20
  6. Step 6: Final answer
    x = 352,810.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.