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Finding the Fourth Proportional to 257,176.39, 355,580.66 and 225,253.71

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Solution

The fourth proportional to 257,176.39, 355,580.66 and 225,253.71 is: 311,443.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,176.39 : 355,580.66 = 225,253.71 : x
  2. Step 2: Convert to fraction form
    257,176.39/355,580.66 = 225,253.71/x
  3. Step 3: Cross multiply
    257,176.39x = 355,580.66 × 225,253.71
  4. Step 4: Simplify right side
    257,176.39x = 80,095,862,869.25
  5. Step 5: Solve for x
    x = 80,095,862,869.25/257,176.39
  6. Step 6: Final answer
    x = 311,443.30

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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.