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Finding the Fourth Proportional to 392,019.74, 540,414.60 and 277,095.62

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Solution

The fourth proportional to 392,019.74, 540,414.60 and 277,095.62 is: 381,987.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,019.74 : 540,414.60 = 277,095.62 : x
  2. Step 2: Convert to fraction form
    392,019.74/540,414.60 = 277,095.62/x
  3. Step 3: Cross multiply
    392,019.74x = 540,414.60 × 277,095.62
  4. Step 4: Simplify right side
    392,019.74x = 149,746,515,941.98
  5. Step 5: Solve for x
    x = 149,746,515,941.98/392,019.74
  6. Step 6: Final answer
    x = 381,987.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.