Home / 286,193.42-395,125-221,545.70

Finding the Fourth Proportional to 286,193.42, 395,125 and 221,545.70

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Solution

The fourth proportional to 286,193.42, 395,125 and 221,545.70 is: 305,870.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,193.42 : 395,125 = 221,545.70 : x
  2. Step 2: Convert to fraction form
    286,193.42/395,125 = 221,545.70/x
  3. Step 3: Cross multiply
    286,193.42x = 395,125 × 221,545.70
  4. Step 4: Simplify right side
    286,193.42x = 87,538,244,712.50
  5. Step 5: Solve for x
    x = 87,538,244,712.50/286,193.42
  6. Step 6: Final answer
    x = 305,870.92

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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.