Home / 257,330.55-355,065.46-161,781.74

Finding the Fourth Proportional to 257,330.55, 355,065.46 and 161,781.74

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Solution

The fourth proportional to 257,330.55, 355,065.46 and 161,781.74 is: 223,226.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,330.55 : 355,065.46 = 161,781.74 : x
  2. Step 2: Convert to fraction form
    257,330.55/355,065.46 = 161,781.74/x
  3. Step 3: Cross multiply
    257,330.55x = 355,065.46 × 161,781.74
  4. Step 4: Simplify right side
    257,330.55x = 57,443,107,084.41
  5. Step 5: Solve for x
    x = 57,443,107,084.41/257,330.55
  6. Step 6: Final answer
    x = 223,226.92

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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.