Home / 280,722.12-387,286.54-173,105.32

Finding the Fourth Proportional to 280,722.12, 387,286.54 and 173,105.32

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Solution

The fourth proportional to 280,722.12, 387,286.54 and 173,105.32 is: 238,817.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,722.12 : 387,286.54 = 173,105.32 : x
  2. Step 2: Convert to fraction form
    280,722.12/387,286.54 = 173,105.32/x
  3. Step 3: Cross multiply
    280,722.12x = 387,286.54 × 173,105.32
  4. Step 4: Simplify right side
    280,722.12x = 67,041,360,438.39
  5. Step 5: Solve for x
    x = 67,041,360,438.39/280,722.12
  6. Step 6: Final answer
    x = 238,817.52

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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.