Home / 280,669.12-387,193.44-161,368

Finding the Fourth Proportional to 280,669.12, 387,193.44 and 161,368

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Solution

The fourth proportional to 280,669.12, 387,193.44 and 161,368 is: 222,613.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,669.12 : 387,193.44 = 161,368 : x
  2. Step 2: Convert to fraction form
    280,669.12/387,193.44 = 161,368/x
  3. Step 3: Cross multiply
    280,669.12x = 387,193.44 × 161,368
  4. Step 4: Simplify right side
    280,669.12x = 62,480,631,025.92
  5. Step 5: Solve for x
    x = 62,480,631,025.92/280,669.12
  6. Step 6: Final answer
    x = 222,613.13

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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.