Home / 257,155.16-385,793.88-107,312.18

Finding the Fourth Proportional to 257,155.16, 385,793.88 and 107,312.18

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Solution

The fourth proportional to 257,155.16, 385,793.88 and 107,312.18 is: 160,993.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,155.16 : 385,793.88 = 107,312.18 : x
  2. Step 2: Convert to fraction form
    257,155.16/385,793.88 = 107,312.18/x
  3. Step 3: Cross multiply
    257,155.16x = 385,793.88 × 107,312.18
  4. Step 4: Simplify right side
    257,155.16x = 41,400,382,293.46
  5. Step 5: Solve for x
    x = 41,400,382,293.46/257,155.16
  6. Step 6: Final answer
    x = 160,993.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.