Home / 228,787.48-315,725.82-128,185.24

Finding the Fourth Proportional to 228,787.48, 315,725.82 and 128,185.24

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Solution

The fourth proportional to 228,787.48, 315,725.82 and 128,185.24 is: 176,895.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,787.48 : 315,725.82 = 128,185.24 : x
  2. Step 2: Convert to fraction form
    228,787.48/315,725.82 = 128,185.24/x
  3. Step 3: Cross multiply
    228,787.48x = 315,725.82 × 128,185.24
  4. Step 4: Simplify right side
    228,787.48x = 40,471,390,010.90
  5. Step 5: Solve for x
    x = 40,471,390,010.90/228,787.48
  6. Step 6: Final answer
    x = 176,895.13

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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.