Home / 356,639.80-534,664.86-278,102.20

Finding the Fourth Proportional to 356,639.80, 534,664.86 and 278,102.20

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Solution

The fourth proportional to 356,639.80, 534,664.86 and 278,102.20 is: 416,923.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,639.80 : 534,664.86 = 278,102.20 : x
  2. Step 2: Convert to fraction form
    356,639.80/534,664.86 = 278,102.20/x
  3. Step 3: Cross multiply
    356,639.80x = 534,664.86 × 278,102.20
  4. Step 4: Simplify right side
    356,639.80x = 148,691,473,828.69
  5. Step 5: Solve for x
    x = 148,691,473,828.69/356,639.80
  6. Step 6: Final answer
    x = 416,923.39

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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.