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Finding the Fourth Proportional to 394,910.20, 592,802.70 and 245,319.40

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Solution

The fourth proportional to 394,910.20, 592,802.70 and 245,319.40 is: 368,250.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,910.20 : 592,802.70 = 245,319.40 : x
  2. Step 2: Convert to fraction form
    394,910.20/592,802.70 = 245,319.40/x
  3. Step 3: Cross multiply
    394,910.20x = 592,802.70 × 245,319.40
  4. Step 4: Simplify right side
    394,910.20x = 145,426,002,682.38
  5. Step 5: Solve for x
    x = 145,426,002,682.38/394,910.20
  6. Step 6: Final answer
    x = 368,250.81

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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.