Home / 280,113.70-386,541.52-159,238.21

Finding the Fourth Proportional to 280,113.70, 386,541.52 and 159,238.21

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Solution

The fourth proportional to 280,113.70, 386,541.52 and 159,238.21 is: 219,739.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,113.70 : 386,541.52 = 159,238.21 : x
  2. Step 2: Convert to fraction form
    280,113.70/386,541.52 = 159,238.21/x
  3. Step 3: Cross multiply
    280,113.70x = 386,541.52 × 159,238.21
  4. Step 4: Simplify right side
    280,113.70x = 61,552,179,735.48
  5. Step 5: Solve for x
    x = 61,552,179,735.48/280,113.70
  6. Step 6: Final answer
    x = 219,739.98

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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.