Home / 280,911.06-387,860.34-173,628.18

Finding the Fourth Proportional to 280,911.06, 387,860.34 and 173,628.18

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Solution

The fourth proportional to 280,911.06, 387,860.34 and 173,628.18 is: 239,732.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,911.06 : 387,860.34 = 173,628.18 : x
  2. Step 2: Convert to fraction form
    280,911.06/387,860.34 = 173,628.18/x
  3. Step 3: Cross multiply
    280,911.06x = 387,860.34 × 173,628.18
  4. Step 4: Simplify right side
    280,911.06x = 67,343,484,928.38
  5. Step 5: Solve for x
    x = 67,343,484,928.38/280,911.06
  6. Step 6: Final answer
    x = 239,732.41

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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.