Home / 312,374.54-431,075.04-169,131.62

Finding the Fourth Proportional to 312,374.54, 431,075.04 and 169,131.62

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Solution

The fourth proportional to 312,374.54, 431,075.04 and 169,131.62 is: 233,400.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,374.54 : 431,075.04 = 169,131.62 : x
  2. Step 2: Convert to fraction form
    312,374.54/431,075.04 = 169,131.62/x
  3. Step 3: Cross multiply
    312,374.54x = 431,075.04 × 169,131.62
  4. Step 4: Simplify right side
    312,374.54x = 72,908,419,856.76
  5. Step 5: Solve for x
    x = 72,908,419,856.76/312,374.54
  6. Step 6: Final answer
    x = 233,400.65

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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.