Home / 312,928.16-431,841.10-169,688.20

Finding the Fourth Proportional to 312,928.16, 431,841.10 and 169,688.20

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Solution

The fourth proportional to 312,928.16, 431,841.10 and 169,688.20 is: 234,169.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,928.16 : 431,841.10 = 169,688.20 : x
  2. Step 2: Convert to fraction form
    312,928.16/431,841.10 = 169,688.20/x
  3. Step 3: Cross multiply
    312,928.16x = 431,841.10 × 169,688.20
  4. Step 4: Simplify right side
    312,928.16x = 73,278,337,441.20
  5. Step 5: Solve for x
    x = 73,278,337,441.20/312,928.16
  6. Step 6: Final answer
    x = 234,169.84

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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.