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Finding the Fourth Proportional to 280,989.99, 387,766.58 and 158,483.97

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Solution

The fourth proportional to 280,989.99, 387,766.58 and 158,483.97 is: 218,708.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,989.99 : 387,766.58 = 158,483.97 : x
  2. Step 2: Convert to fraction form
    280,989.99/387,766.58 = 158,483.97/x
  3. Step 3: Cross multiply
    280,989.99x = 387,766.58 × 158,483.97
  4. Step 4: Simplify right side
    280,989.99x = 61,454,786,239.30
  5. Step 5: Solve for x
    x = 61,454,786,239.30/280,989.99
  6. Step 6: Final answer
    x = 218,708.10

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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.