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Finding the Fourth Proportional to 390,356.94, 585,083.49 and 179,552.46

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Solution

The fourth proportional to 390,356.94, 585,083.49 and 179,552.46 is: 269,120.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,356.94 : 585,083.49 = 179,552.46 : x
  2. Step 2: Convert to fraction form
    390,356.94/585,083.49 = 179,552.46/x
  3. Step 3: Cross multiply
    390,356.94x = 585,083.49 × 179,552.46
  4. Step 4: Simplify right side
    390,356.94x = 105,053,179,934.89
  5. Step 5: Solve for x
    x = 105,053,179,934.89/390,356.94
  6. Step 6: Final answer
    x = 269,120.82

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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.