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Finding the Fourth Proportional to 328,514.67, 492,825.24 and 128,726.73

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Solution

The fourth proportional to 328,514.67, 492,825.24 and 128,726.73 is: 193,110.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,514.67 : 492,825.24 = 128,726.73 : x
  2. Step 2: Convert to fraction form
    328,514.67/492,825.24 = 128,726.73/x
  3. Step 3: Cross multiply
    328,514.67x = 492,825.24 × 128,726.73
  4. Step 4: Simplify right side
    328,514.67x = 63,439,781,606.67
  5. Step 5: Solve for x
    x = 63,439,781,606.67/328,514.67
  6. Step 6: Final answer
    x = 193,110.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.