Home / 280,940.57-387,723.32-160,120.79

Finding the Fourth Proportional to 280,940.57, 387,723.32 and 160,120.79

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Solution

The fourth proportional to 280,940.57, 387,723.32 and 160,120.79 is: 220,981.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,940.57 : 387,723.32 = 160,120.79 : x
  2. Step 2: Convert to fraction form
    280,940.57/387,723.32 = 160,120.79/x
  3. Step 3: Cross multiply
    280,940.57x = 387,723.32 × 160,120.79
  4. Step 4: Simplify right side
    280,940.57x = 62,082,564,299.82
  5. Step 5: Solve for x
    x = 62,082,564,299.82/280,940.57
  6. Step 6: Final answer
    x = 220,981.13

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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.