Home / 316,140.31-436,282.86-172,910.05

Finding the Fourth Proportional to 316,140.31, 436,282.86 and 172,910.05

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Solution

The fourth proportional to 316,140.31, 436,282.86 and 172,910.05 is: 238,620.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,140.31 : 436,282.86 = 172,910.05 : x
  2. Step 2: Convert to fraction form
    316,140.31/436,282.86 = 172,910.05/x
  3. Step 3: Cross multiply
    316,140.31x = 436,282.86 × 172,910.05
  4. Step 4: Simplify right side
    316,140.31x = 75,437,691,136.74
  5. Step 5: Solve for x
    x = 75,437,691,136.74/316,140.31
  6. Step 6: Final answer
    x = 238,620.92

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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.