Home / 415,795.80-623,708.10-131,489.40

Finding the Fourth Proportional to 415,795.80, 623,708.10 and 131,489.40

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Solution

The fourth proportional to 415,795.80, 623,708.10 and 131,489.40 is: 197,238.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,795.80 : 623,708.10 = 131,489.40 : x
  2. Step 2: Convert to fraction form
    415,795.80/623,708.10 = 131,489.40/x
  3. Step 3: Cross multiply
    415,795.80x = 623,708.10 × 131,489.40
  4. Step 4: Simplify right side
    415,795.80x = 82,011,003,844.14
  5. Step 5: Solve for x
    x = 82,011,003,844.14/415,795.80
  6. Step 6: Final answer
    x = 197,238.65

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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.