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Finding the Fourth Proportional to 308,876.20, 463,314.30 and 121,863.40

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Solution

The fourth proportional to 308,876.20, 463,314.30 and 121,863.40 is: 182,795.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,876.20 : 463,314.30 = 121,863.40 : x
  2. Step 2: Convert to fraction form
    308,876.20/463,314.30 = 121,863.40/x
  3. Step 3: Cross multiply
    308,876.20x = 463,314.30 × 121,863.40
  4. Step 4: Simplify right side
    308,876.20x = 56,461,055,866.62
  5. Step 5: Solve for x
    x = 56,461,055,866.62/308,876.20
  6. Step 6: Final answer
    x = 182,795.10

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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.