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Finding the Fourth Proportional to 402,661.12, 603,726 and 225,186.88

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Solution

The fourth proportional to 402,661.12, 603,726 and 225,186.88 is: 337,631.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,661.12 : 603,726 = 225,186.88 : x
  2. Step 2: Convert to fraction form
    402,661.12/603,726 = 225,186.88/x
  3. Step 3: Cross multiply
    402,661.12x = 603,726 × 225,186.88
  4. Step 4: Simplify right side
    402,661.12x = 135,951,174,314.88
  5. Step 5: Solve for x
    x = 135,951,174,314.88/402,661.12
  6. Step 6: Final answer
    x = 337,631.74

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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.