Home / 280,304.02-420,517.34-90,783.54

Finding the Fourth Proportional to 280,304.02, 420,517.34 and 90,783.54

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Solution

The fourth proportional to 280,304.02, 420,517.34 and 90,783.54 is: 136,195.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,304.02 : 420,517.34 = 90,783.54 : x
  2. Step 2: Convert to fraction form
    280,304.02/420,517.34 = 90,783.54/x
  3. Step 3: Cross multiply
    280,304.02x = 420,517.34 × 90,783.54
  4. Step 4: Simplify right side
    280,304.02x = 38,176,052,983.54
  5. Step 5: Solve for x
    x = 38,176,052,983.54/280,304.02
  6. Step 6: Final answer
    x = 136,195.17

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1.5x scale

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.