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Finding the Fourth Proportional to 427,655.32, 641,979.90 and 250,289.62

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Solution

The fourth proportional to 427,655.32, 641,979.90 and 250,289.62 is: 375,725.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,655.32 : 641,979.90 = 250,289.62 : x
  2. Step 2: Convert to fraction form
    427,655.32/641,979.90 = 250,289.62/x
  3. Step 3: Cross multiply
    427,655.32x = 641,979.90 × 250,289.62
  4. Step 4: Simplify right side
    427,655.32x = 160,680,905,218.64
  5. Step 5: Solve for x
    x = 160,680,905,218.64/427,655.32
  6. Step 6: Final answer
    x = 375,725.26

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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.