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Finding the Fourth Proportional to 318,176.64, 439,150.55 and 201,814.88

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Solution

The fourth proportional to 318,176.64, 439,150.55 and 201,814.88 is: 278,546.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,176.64 : 439,150.55 = 201,814.88 : x
  2. Step 2: Convert to fraction form
    318,176.64/439,150.55 = 201,814.88/x
  3. Step 3: Cross multiply
    318,176.64x = 439,150.55 × 201,814.88
  4. Step 4: Simplify right side
    318,176.64x = 88,627,112,345.36
  5. Step 5: Solve for x
    x = 88,627,112,345.36/318,176.64
  6. Step 6: Final answer
    x = 278,546.89

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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.