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Finding the Fourth Proportional to 259,432.65, 388,445.49 and 134,511.21

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Solution

The fourth proportional to 259,432.65, 388,445.49 and 134,511.21 is: 201,402.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,432.65 : 388,445.49 = 134,511.21 : x
  2. Step 2: Convert to fraction form
    259,432.65/388,445.49 = 134,511.21/x
  3. Step 3: Cross multiply
    259,432.65x = 388,445.49 × 134,511.21
  4. Step 4: Simplify right side
    259,432.65x = 52,250,272,878.94
  5. Step 5: Solve for x
    x = 52,250,272,878.94/259,432.65
  6. Step 6: Final answer
    x = 201,402.07

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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.