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Finding the Fourth Proportional to 408,084.20, 612,126.30 and 297,492.20

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Solution

The fourth proportional to 408,084.20, 612,126.30 and 297,492.20 is: 446,238.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,084.20 : 612,126.30 = 297,492.20 : x
  2. Step 2: Convert to fraction form
    408,084.20/612,126.30 = 297,492.20/x
  3. Step 3: Cross multiply
    408,084.20x = 612,126.30 × 297,492.20
  4. Step 4: Simplify right side
    408,084.20x = 182,102,799,664.86
  5. Step 5: Solve for x
    x = 182,102,799,664.86/408,084.20
  6. Step 6: Final answer
    x = 446,238.30

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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.