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Finding the Fourth Proportional to 311,889.60, 430,371.48 and 175,925.78

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Solution

The fourth proportional to 311,889.60, 430,371.48 and 175,925.78 is: 242,757.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,889.60 : 430,371.48 = 175,925.78 : x
  2. Step 2: Convert to fraction form
    311,889.60/430,371.48 = 175,925.78/x
  3. Step 3: Cross multiply
    311,889.60x = 430,371.48 × 175,925.78
  4. Step 4: Simplify right side
    311,889.60x = 75,713,438,308.75
  5. Step 5: Solve for x
    x = 75,713,438,308.75/311,889.60
  6. Step 6: Final answer
    x = 242,757.18

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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.