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Finding the Fourth Proportional to 257,176.51, 355,580.51 and 225,253.60

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Solution

The fourth proportional to 257,176.51, 355,580.51 and 225,253.60 is: 311,442.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,176.51 : 355,580.51 = 225,253.60 : x
  2. Step 2: Convert to fraction form
    257,176.51/355,580.51 = 225,253.60/x
  3. Step 3: Cross multiply
    257,176.51x = 355,580.51 × 225,253.60
  4. Step 4: Simplify right side
    257,176.51x = 80,095,787,952.12
  5. Step 5: Solve for x
    x = 80,095,787,952.12/257,176.51
  6. Step 6: Final answer
    x = 311,442.86

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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.