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Finding the Fourth Proportional to 519,937.85, 779,934.45 and 164,979.65

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Solution

The fourth proportional to 519,937.85, 779,934.45 and 164,979.65 is: 247,478.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,937.85 : 779,934.45 = 164,979.65 : x
  2. Step 2: Convert to fraction form
    519,937.85/779,934.45 = 164,979.65/x
  3. Step 3: Cross multiply
    519,937.85x = 779,934.45 × 164,979.65
  4. Step 4: Simplify right side
    519,937.85x = 128,673,312,583.94
  5. Step 5: Solve for x
    x = 128,673,312,583.94/519,937.85
  6. Step 6: Final answer
    x = 247,478.26

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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.