Home / 312,795.20-469,538.40-172,827.20

Finding the Fourth Proportional to 312,795.20, 469,538.40 and 172,827.20

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Solution

The fourth proportional to 312,795.20, 469,538.40 and 172,827.20 is: 259,431.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,795.20 : 469,538.40 = 172,827.20 : x
  2. Step 2: Convert to fraction form
    312,795.20/469,538.40 = 172,827.20/x
  3. Step 3: Cross multiply
    312,795.20x = 469,538.40 × 172,827.20
  4. Step 4: Simplify right side
    312,795.20x = 81,149,006,964.48
  5. Step 5: Solve for x
    x = 81,149,006,964.48/312,795.20
  6. Step 6: Final answer
    x = 259,431.75

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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.