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Finding the Fourth Proportional to 348,520.40, 521,398.20 and 302,286.80

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Solution

The fourth proportional to 348,520.40, 521,398.20 and 302,286.80 is: 452,231.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,520.40 : 521,398.20 = 302,286.80 : x
  2. Step 2: Convert to fraction form
    348,520.40/521,398.20 = 302,286.80/x
  3. Step 3: Cross multiply
    348,520.40x = 521,398.20 × 302,286.80
  4. Step 4: Simplify right side
    348,520.40x = 157,611,793,403.76
  5. Step 5: Solve for x
    x = 157,611,793,403.76/348,520.40
  6. Step 6: Final answer
    x = 452,231.18

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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.