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Finding the Fourth Proportional to 368,989.68, 553,659.48 and 219,525.24

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Solution

The fourth proportional to 368,989.68, 553,659.48 and 219,525.24 is: 329,391.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,989.68 : 553,659.48 = 219,525.24 : x
  2. Step 2: Convert to fraction form
    368,989.68/553,659.48 = 219,525.24/x
  3. Step 3: Cross multiply
    368,989.68x = 553,659.48 × 219,525.24
  4. Step 4: Simplify right side
    368,989.68x = 121,542,230,225.28
  5. Step 5: Solve for x
    x = 121,542,230,225.28/368,989.68
  6. Step 6: Final answer
    x = 329,391.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.