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Finding the Fourth Proportional to 388,356.57, 582,674.58 and 135,674.24

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Solution

The fourth proportional to 388,356.57, 582,674.58 and 135,674.24 is: 203,560.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,356.57 : 582,674.58 = 135,674.24 : x
  2. Step 2: Convert to fraction form
    388,356.57/582,674.58 = 135,674.24/x
  3. Step 3: Cross multiply
    388,356.57x = 582,674.58 × 135,674.24
  4. Step 4: Simplify right side
    388,356.57x = 79,053,927,895.45
  5. Step 5: Solve for x
    x = 79,053,927,895.45/388,356.57
  6. Step 6: Final answer
    x = 203,560.17

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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.