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Finding the Fourth Proportional to 378,512.70, 567,250.65 and 308,528.70

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Solution

The fourth proportional to 378,512.70, 567,250.65 and 308,528.70 is: 462,370.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,512.70 : 567,250.65 = 308,528.70 : x
  2. Step 2: Convert to fraction form
    378,512.70/567,250.65 = 308,528.70/x
  3. Step 3: Cross multiply
    378,512.70x = 567,250.65 × 308,528.70
  4. Step 4: Simplify right side
    378,512.70x = 175,013,105,618.66
  5. Step 5: Solve for x
    x = 175,013,105,618.66/378,512.70
  6. Step 6: Final answer
    x = 462,370.50

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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.