Home / 280,230.42-386,717.25-152,905.92

Finding the Fourth Proportional to 280,230.42, 386,717.25 and 152,905.92

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Solution

The fourth proportional to 280,230.42, 386,717.25 and 152,905.92 is: 211,009.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,230.42 : 386,717.25 = 152,905.92 : x
  2. Step 2: Convert to fraction form
    280,230.42/386,717.25 = 152,905.92/x
  3. Step 3: Cross multiply
    280,230.42x = 386,717.25 × 152,905.92
  4. Step 4: Simplify right side
    280,230.42x = 59,131,356,891.12
  5. Step 5: Solve for x
    x = 59,131,356,891.12/280,230.42
  6. Step 6: Final answer
    x = 211,009.77

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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.