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Finding the Fourth Proportional to 518,979.49, 778,598.84 and 144,999.25

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Solution

The fourth proportional to 518,979.49, 778,598.84 and 144,999.25 is: 217,535.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,979.49 : 778,598.84 = 144,999.25 : x
  2. Step 2: Convert to fraction form
    518,979.49/778,598.84 = 144,999.25/x
  3. Step 3: Cross multiply
    518,979.49x = 778,598.84 × 144,999.25
  4. Step 4: Simplify right side
    518,979.49x = 112,896,247,850.87
  5. Step 5: Solve for x
    x = 112,896,247,850.87/518,979.49
  6. Step 6: Final answer
    x = 217,535.09

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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.