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Finding the Fourth Proportional to 318,904.20, 478,356.30 and 244,254.60

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Solution

The fourth proportional to 318,904.20, 478,356.30 and 244,254.60 is: 366,381.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,904.20 : 478,356.30 = 244,254.60 : x
  2. Step 2: Convert to fraction form
    318,904.20/478,356.30 = 244,254.60/x
  3. Step 3: Cross multiply
    318,904.20x = 478,356.30 × 244,254.60
  4. Step 4: Simplify right side
    318,904.20x = 116,840,726,713.98
  5. Step 5: Solve for x
    x = 116,840,726,713.98/318,904.20
  6. Step 6: Final answer
    x = 366,381.90

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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.