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Finding the Fourth Proportional to 308,697.60, 463,046.40 and 87,081.60

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Solution

The fourth proportional to 308,697.60, 463,046.40 and 87,081.60 is: 130,622.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,697.60 : 463,046.40 = 87,081.60 : x
  2. Step 2: Convert to fraction form
    308,697.60/463,046.40 = 87,081.60/x
  3. Step 3: Cross multiply
    308,697.60x = 463,046.40 × 87,081.60
  4. Step 4: Simplify right side
    308,697.60x = 40,322,821,386.24
  5. Step 5: Solve for x
    x = 40,322,821,386.24/308,697.60
  6. Step 6: Final answer
    x = 130,622.40

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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.