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Finding the Fourth Proportional to 312,722.95, 431,557.53 and 169,482.97

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Solution

The fourth proportional to 312,722.95, 431,557.53 and 169,482.97 is: 233,886.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,722.95 : 431,557.53 = 169,482.97 : x
  2. Step 2: Convert to fraction form
    312,722.95/431,557.53 = 169,482.97/x
  3. Step 3: Cross multiply
    312,722.95x = 431,557.53 × 169,482.97
  4. Step 4: Simplify right side
    312,722.95x = 73,141,651,910.26
  5. Step 5: Solve for x
    x = 73,141,651,910.26/312,722.95
  6. Step 6: Final answer
    x = 233,886.42

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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.