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Finding the Fourth Proportional to 355,008.20, 532,512.30 and 189,120.20

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Solution

The fourth proportional to 355,008.20, 532,512.30 and 189,120.20 is: 283,680.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,008.20 : 532,512.30 = 189,120.20 : x
  2. Step 2: Convert to fraction form
    355,008.20/532,512.30 = 189,120.20/x
  3. Step 3: Cross multiply
    355,008.20x = 532,512.30 × 189,120.20
  4. Step 4: Simplify right side
    355,008.20x = 100,708,832,678.46
  5. Step 5: Solve for x
    x = 100,708,832,678.46/355,008.20
  6. Step 6: Final answer
    x = 283,680.30

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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.