Home / 221,005.04-305,023.91-130,383.47

Finding the Fourth Proportional to 221,005.04, 305,023.91 and 130,383.47

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Solution

The fourth proportional to 221,005.04, 305,023.91 and 130,383.47 is: 179,950.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,005.04 : 305,023.91 = 130,383.47 : x
  2. Step 2: Convert to fraction form
    221,005.04/305,023.91 = 130,383.47/x
  3. Step 3: Cross multiply
    221,005.04x = 305,023.91 × 130,383.47
  4. Step 4: Simplify right side
    221,005.04x = 39,770,073,641.73
  5. Step 5: Solve for x
    x = 39,770,073,641.73/221,005.04
  6. Step 6: Final answer
    x = 179,950.98

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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.