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Finding the Fourth Proportional to 252,032.20, 378,048.30 and 85,820.20

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Solution

The fourth proportional to 252,032.20, 378,048.30 and 85,820.20 is: 128,730.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,032.20 : 378,048.30 = 85,820.20 : x
  2. Step 2: Convert to fraction form
    252,032.20/378,048.30 = 85,820.20/x
  3. Step 3: Cross multiply
    252,032.20x = 378,048.30 × 85,820.20
  4. Step 4: Simplify right side
    252,032.20x = 32,444,180,715.66
  5. Step 5: Solve for x
    x = 32,444,180,715.66/252,032.20
  6. Step 6: Final answer
    x = 128,730.30

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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.