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Finding the Fourth Proportional to 528,108.68, 791,754.78 and 172,901

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Solution

The fourth proportional to 528,108.68, 791,754.78 and 172,901 is: 259,217.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,108.68 : 791,754.78 = 172,901 : x
  2. Step 2: Convert to fraction form
    528,108.68/791,754.78 = 172,901/x
  3. Step 3: Cross multiply
    528,108.68x = 791,754.78 × 172,901
  4. Step 4: Simplify right side
    528,108.68x = 136,895,193,216.78
  5. Step 5: Solve for x
    x = 136,895,193,216.78/528,108.68
  6. Step 6: Final answer
    x = 259,217.84

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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.