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Finding the Fourth Proportional to 279,424.38, 417,107.94 and 258,608.46

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Solution

The fourth proportional to 279,424.38, 417,107.94 and 258,608.46 is: 386,035.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,424.38 : 417,107.94 = 258,608.46 : x
  2. Step 2: Convert to fraction form
    279,424.38/417,107.94 = 258,608.46/x
  3. Step 3: Cross multiply
    279,424.38x = 417,107.94 × 258,608.46
  4. Step 4: Simplify right side
    279,424.38x = 107,867,642,017.17
  5. Step 5: Solve for x
    x = 107,867,642,017.17/279,424.38
  6. Step 6: Final answer
    x = 386,035.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.