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Finding the Fourth Proportional to 308,081.70, 462,171.15 and 97,740.90

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Solution

The fourth proportional to 308,081.70, 462,171.15 and 97,740.90 is: 146,626.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,081.70 : 462,171.15 = 97,740.90 : x
  2. Step 2: Convert to fraction form
    308,081.70/462,171.15 = 97,740.90/x
  3. Step 3: Cross multiply
    308,081.70x = 462,171.15 × 97,740.90
  4. Step 4: Simplify right side
    308,081.70x = 45,173,024,155.04
  5. Step 5: Solve for x
    x = 45,173,024,155.04/308,081.70
  6. Step 6: Final answer
    x = 146,626.77

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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.