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Finding the Fourth Proportional to 255,438.12, 352,505.16 and 148,028.88

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Solution

The fourth proportional to 255,438.12, 352,505.16 and 148,028.88 is: 204,280.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,438.12 : 352,505.16 = 148,028.88 : x
  2. Step 2: Convert to fraction form
    255,438.12/352,505.16 = 148,028.88/x
  3. Step 3: Cross multiply
    255,438.12x = 352,505.16 × 148,028.88
  4. Step 4: Simplify right side
    255,438.12x = 52,180,944,029.02
  5. Step 5: Solve for x
    x = 52,180,944,029.02/255,438.12
  6. Step 6: Final answer
    x = 204,280.18

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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.