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Finding the Fourth Proportional to 519,621.74, 779,455.29 and 164,661.94

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Solution

The fourth proportional to 519,621.74, 779,455.29 and 164,661.94 is: 247,000.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,621.74 : 779,455.29 = 164,661.94 : x
  2. Step 2: Convert to fraction form
    519,621.74/779,455.29 = 164,661.94/x
  3. Step 3: Cross multiply
    519,621.74x = 779,455.29 × 164,661.94
  4. Step 4: Simplify right side
    519,621.74x = 128,346,620,194.66
  5. Step 5: Solve for x
    x = 128,346,620,194.66/519,621.74
  6. Step 6: Final answer
    x = 247,000.10

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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.