Home / 420,265.41-579,963.51-238,977.36

Finding the Fourth Proportional to 420,265.41, 579,963.51 and 238,977.36

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Solution

The fourth proportional to 420,265.41, 579,963.51 and 238,977.36 is: 329,787.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,265.41 : 579,963.51 = 238,977.36 : x
  2. Step 2: Convert to fraction form
    420,265.41/579,963.51 = 238,977.36/x
  3. Step 3: Cross multiply
    420,265.41x = 579,963.51 × 238,977.36
  4. Step 4: Simplify right side
    420,265.41x = 138,598,148,516.13
  5. Step 5: Solve for x
    x = 138,598,148,516.13/420,265.41
  6. Step 6: Final answer
    x = 329,787.19

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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.