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Finding the Fourth Proportional to 318,182.64, 439,158.87 and 201,820.83

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Solution

The fourth proportional to 318,182.64, 439,158.87 and 201,820.83 is: 278,555.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,182.64 : 439,158.87 = 201,820.83 : x
  2. Step 2: Convert to fraction form
    318,182.64/439,158.87 = 201,820.83/x
  3. Step 3: Cross multiply
    318,182.64x = 439,158.87 × 201,820.83
  4. Step 4: Simplify right side
    318,182.64x = 88,631,407,645.26
  5. Step 5: Solve for x
    x = 88,631,407,645.26/318,182.64
  6. Step 6: Final answer
    x = 278,555.13

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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.