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Finding the Fourth Proportional to 308,049.70, 425,105.13 and 180,700.78

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Solution

The fourth proportional to 308,049.70, 425,105.13 and 180,700.78 is: 249,365.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,049.70 : 425,105.13 = 180,700.78 : x
  2. Step 2: Convert to fraction form
    308,049.70/425,105.13 = 180,700.78/x
  3. Step 3: Cross multiply
    308,049.70x = 425,105.13 × 180,700.78
  4. Step 4: Simplify right side
    308,049.70x = 76,816,828,573.00
  5. Step 5: Solve for x
    x = 76,816,828,573.00/308,049.70
  6. Step 6: Final answer
    x = 249,365.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.