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Finding the Fourth Proportional to 245,432.55, 368,057.68 and 85,467.42

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Solution

The fourth proportional to 245,432.55, 368,057.68 and 85,467.42 is: 128,169.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,432.55 : 368,057.68 = 85,467.42 : x
  2. Step 2: Convert to fraction form
    245,432.55/368,057.68 = 85,467.42/x
  3. Step 3: Cross multiply
    245,432.55x = 368,057.68 × 85,467.42
  4. Step 4: Simplify right side
    245,432.55x = 31,456,940,320.79
  5. Step 5: Solve for x
    x = 31,456,940,320.79/245,432.55
  6. Step 6: Final answer
    x = 128,169.39

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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.