Home / 280,763.44-387,456.40-153,439.04

Finding the Fourth Proportional to 280,763.44, 387,456.40 and 153,439.04

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Solution

The fourth proportional to 280,763.44, 387,456.40 and 153,439.04 is: 211,747.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,763.44 : 387,456.40 = 153,439.04 : x
  2. Step 2: Convert to fraction form
    280,763.44/387,456.40 = 153,439.04/x
  3. Step 3: Cross multiply
    280,763.44x = 387,456.40 × 153,439.04
  4. Step 4: Simplify right side
    280,763.44x = 59,450,938,057.86
  5. Step 5: Solve for x
    x = 59,450,938,057.86/280,763.44
  6. Step 6: Final answer
    x = 211,747.43

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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.