Home / 280,208.21-386,685.34-159,349.48

Finding the Fourth Proportional to 280,208.21, 386,685.34 and 159,349.48

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Solution

The fourth proportional to 280,208.21, 386,685.34 and 159,349.48 is: 219,901.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,208.21 : 386,685.34 = 159,349.48 : x
  2. Step 2: Convert to fraction form
    280,208.21/386,685.34 = 159,349.48/x
  3. Step 3: Cross multiply
    280,208.21x = 386,685.34 × 159,349.48
  4. Step 4: Simplify right side
    280,208.21x = 61,618,107,383.88
  5. Step 5: Solve for x
    x = 61,618,107,383.88/280,208.21
  6. Step 6: Final answer
    x = 219,901.15

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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.