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Finding the Fourth Proportional to 308,043.20, 462,079.20 and 97,697.60

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Solution

The fourth proportional to 308,043.20, 462,079.20 and 97,697.60 is: 146,550.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,043.20 : 462,079.20 = 97,697.60 : x
  2. Step 2: Convert to fraction form
    308,043.20/462,079.20 = 97,697.60/x
  3. Step 3: Cross multiply
    308,043.20x = 462,079.20 × 97,697.60
  4. Step 4: Simplify right side
    308,043.20x = 45,144,028,849.92
  5. Step 5: Solve for x
    x = 45,144,028,849.92/308,043.20
  6. Step 6: Final answer
    x = 146,550.97

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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.