Home / 638,111.38-956,928.75-211,568.98

Finding the Fourth Proportional to 638,111.38, 956,928.75 and 211,568.98

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Solution

The fourth proportional to 638,111.38, 956,928.75 and 211,568.98 is: 317,274.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,111.38 : 956,928.75 = 211,568.98 : x
  2. Step 2: Convert to fraction form
    638,111.38/956,928.75 = 211,568.98/x
  3. Step 3: Cross multiply
    638,111.38x = 956,928.75 × 211,568.98
  4. Step 4: Simplify right side
    638,111.38x = 202,456,439,570.18
  5. Step 5: Solve for x
    x = 202,456,439,570.18/638,111.38
  6. Step 6: Final answer
    x = 317,274.45

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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.