Home / 280,107.12-386,553.04-152,787.28

Finding the Fourth Proportional to 280,107.12, 386,553.04 and 152,787.28

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Solution

The fourth proportional to 280,107.12, 386,553.04 and 152,787.28 is: 210,849.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,107.12 : 386,553.04 = 152,787.28 : x
  2. Step 2: Convert to fraction form
    280,107.12/386,553.04 = 152,787.28/x
  3. Step 3: Cross multiply
    280,107.12x = 386,553.04 × 152,787.28
  4. Step 4: Simplify right side
    280,107.12x = 59,060,387,557.33
  5. Step 5: Solve for x
    x = 59,060,387,557.33/280,107.12
  6. Step 6: Final answer
    x = 210,849.29

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1.5x scale

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.