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Finding the Fourth Proportional to 280,750.42, 387,390.96 and 159,894.04

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Solution

The fourth proportional to 280,750.42, 387,390.96 and 159,894.04 is: 220,628.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,750.42 : 387,390.96 = 159,894.04 : x
  2. Step 2: Convert to fraction form
    280,750.42/387,390.96 = 159,894.04/x
  3. Step 3: Cross multiply
    280,750.42x = 387,390.96 × 159,894.04
  4. Step 4: Simplify right side
    280,750.42x = 61,941,505,653.88
  5. Step 5: Solve for x
    x = 61,941,505,653.88/280,750.42
  6. Step 6: Final answer
    x = 220,628.36

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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.