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Finding the Fourth Proportional to 518,360.01, 777,487.46 and 139,231.48

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Solution

The fourth proportional to 518,360.01, 777,487.46 and 139,231.48 is: 208,833.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,360.01 : 777,487.46 = 139,231.48 : x
  2. Step 2: Convert to fraction form
    518,360.01/777,487.46 = 139,231.48/x
  3. Step 3: Cross multiply
    518,360.01x = 777,487.46 × 139,231.48
  4. Step 4: Simplify right side
    518,360.01x = 108,250,725,153.65
  5. Step 5: Solve for x
    x = 108,250,725,153.65/518,360.01
  6. Step 6: Final answer
    x = 208,833.10

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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.