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Finding the Fourth Proportional to 354,788.60, 532,334.10 and 186,438.20

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Solution

The fourth proportional to 354,788.60, 532,334.10 and 186,438.20 is: 279,736.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,788.60 : 532,334.10 = 186,438.20 : x
  2. Step 2: Convert to fraction form
    354,788.60/532,334.10 = 186,438.20/x
  3. Step 3: Cross multiply
    354,788.60x = 532,334.10 × 186,438.20
  4. Step 4: Simplify right side
    354,788.60x = 99,247,411,402.62
  5. Step 5: Solve for x
    x = 99,247,411,402.62/354,788.60
  6. Step 6: Final answer
    x = 279,736.75

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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.