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Finding the Fourth Proportional to 348,873.60, 523,310.40 and 86,217.60

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Solution

The fourth proportional to 348,873.60, 523,310.40 and 86,217.60 is: 129,326.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,873.60 : 523,310.40 = 86,217.60 : x
  2. Step 2: Convert to fraction form
    348,873.60/523,310.40 = 86,217.60/x
  3. Step 3: Cross multiply
    348,873.60x = 523,310.40 × 86,217.60
  4. Step 4: Simplify right side
    348,873.60x = 45,118,566,743.04
  5. Step 5: Solve for x
    x = 45,118,566,743.04/348,873.60
  6. Step 6: Final answer
    x = 129,326.40

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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.