Home / 280,709.19-387,378.27-159,850.50

Finding the Fourth Proportional to 280,709.19, 387,378.27 and 159,850.50

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Solution

The fourth proportional to 280,709.19, 387,378.27 and 159,850.50 is: 220,593.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,709.19 : 387,378.27 = 159,850.50 : x
  2. Step 2: Convert to fraction form
    280,709.19/387,378.27 = 159,850.50/x
  3. Step 3: Cross multiply
    280,709.19x = 387,378.27 × 159,850.50
  4. Step 4: Simplify right side
    280,709.19x = 61,922,610,148.64
  5. Step 5: Solve for x
    x = 61,922,610,148.64/280,709.19
  6. Step 6: Final answer
    x = 220,593.46

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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.