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Finding the Fourth Proportional to 519,771.70, 779,718.30 and 164,821.60

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Solution

The fourth proportional to 519,771.70, 779,718.30 and 164,821.60 is: 247,251.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,771.70 : 779,718.30 = 164,821.60 : x
  2. Step 2: Convert to fraction form
    519,771.70/779,718.30 = 164,821.60/x
  3. Step 3: Cross multiply
    519,771.70x = 779,718.30 × 164,821.60
  4. Step 4: Simplify right side
    519,771.70x = 128,514,417,755.28
  5. Step 5: Solve for x
    x = 128,514,417,755.28/519,771.70
  6. Step 6: Final answer
    x = 247,251.66

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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.