Home / 316,131.12-436,254.84-172,890.72

Finding the Fourth Proportional to 316,131.12, 436,254.84 and 172,890.72

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Solution

The fourth proportional to 316,131.12, 436,254.84 and 172,890.72 is: 238,585.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,131.12 : 436,254.84 = 172,890.72 : x
  2. Step 2: Convert to fraction form
    316,131.12/436,254.84 = 172,890.72/x
  3. Step 3: Cross multiply
    316,131.12x = 436,254.84 × 172,890.72
  4. Step 4: Simplify right side
    316,131.12x = 75,424,413,391.08
  5. Step 5: Solve for x
    x = 75,424,413,391.08/316,131.12
  6. Step 6: Final answer
    x = 238,585.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.