Home / 312,427.42-431,150.07-169,187.62

Finding the Fourth Proportional to 312,427.42, 431,150.07 and 169,187.62

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Solution

The fourth proportional to 312,427.42, 431,150.07 and 169,187.62 is: 233,479.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,427.42 : 431,150.07 = 169,187.62 : x
  2. Step 2: Convert to fraction form
    312,427.42/431,150.07 = 169,187.62/x
  3. Step 3: Cross multiply
    312,427.42x = 431,150.07 × 169,187.62
  4. Step 4: Simplify right side
    312,427.42x = 72,945,254,206.13
  5. Step 5: Solve for x
    x = 72,945,254,206.13/312,427.42
  6. Step 6: Final answer
    x = 233,479.04

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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.