Home / 210,433.15-315,787.83-77,314.51

Finding the Fourth Proportional to 210,433.15, 315,787.83 and 77,314.51

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Solution

The fourth proportional to 210,433.15, 315,787.83 and 77,314.51 is: 116,022.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,433.15 : 315,787.83 = 77,314.51 : x
  2. Step 2: Convert to fraction form
    210,433.15/315,787.83 = 77,314.51/x
  3. Step 3: Cross multiply
    210,433.15x = 315,787.83 × 77,314.51
  4. Step 4: Simplify right side
    210,433.15x = 24,414,981,340.41
  5. Step 5: Solve for x
    x = 24,414,981,340.41/210,433.15
  6. Step 6: Final answer
    x = 116,022.51

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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.