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Finding the Fourth Proportional to 388,366.48, 582,278.98 and 172,107.46

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Solution

The fourth proportional to 388,366.48, 582,278.98 and 172,107.46 is: 258,041.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,366.48 : 582,278.98 = 172,107.46 : x
  2. Step 2: Convert to fraction form
    388,366.48/582,278.98 = 172,107.46/x
  3. Step 3: Cross multiply
    388,366.48x = 582,278.98 × 172,107.46
  4. Step 4: Simplify right side
    388,366.48x = 100,214,556,259.19
  5. Step 5: Solve for x
    x = 100,214,556,259.19/388,366.48
  6. Step 6: Final answer
    x = 258,041.21

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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.