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Finding the Fourth Proportional to 475,073.75, 655,593.67 and 257,280.65

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Solution

The fourth proportional to 475,073.75, 655,593.67 and 257,280.65 is: 355,042.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,073.75 : 655,593.67 = 257,280.65 : x
  2. Step 2: Convert to fraction form
    475,073.75/655,593.67 = 257,280.65/x
  3. Step 3: Cross multiply
    475,073.75x = 655,593.67 × 257,280.65
  4. Step 4: Simplify right side
    475,073.75x = 168,671,567,514.07
  5. Step 5: Solve for x
    x = 168,671,567,514.07/475,073.75
  6. Step 6: Final answer
    x = 355,042.91

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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.