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Finding the Fourth Proportional to 255,145.54, 352,144.02 and 147,780.94

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Solution

The fourth proportional to 255,145.54, 352,144.02 and 147,780.94 is: 203,962.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,145.54 : 352,144.02 = 147,780.94 : x
  2. Step 2: Convert to fraction form
    255,145.54/352,144.02 = 147,780.94/x
  3. Step 3: Cross multiply
    255,145.54x = 352,144.02 × 147,780.94
  4. Step 4: Simplify right side
    255,145.54x = 52,040,174,290.98
  5. Step 5: Solve for x
    x = 52,040,174,290.98/255,145.54
  6. Step 6: Final answer
    x = 203,962.70

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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.