Home / 386,927.77-533,960.33-217,161.90

Finding the Fourth Proportional to 386,927.77, 533,960.33 and 217,161.90

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Solution

The fourth proportional to 386,927.77, 533,960.33 and 217,161.90 is: 299,683.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,927.77 : 533,960.33 = 217,161.90 : x
  2. Step 2: Convert to fraction form
    386,927.77/533,960.33 = 217,161.90/x
  3. Step 3: Cross multiply
    386,927.77x = 533,960.33 × 217,161.90
  4. Step 4: Simplify right side
    386,927.77x = 115,955,836,977.10
  5. Step 5: Solve for x
    x = 115,955,836,977.10/386,927.77
  6. Step 6: Final answer
    x = 299,683.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.