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Finding the Fourth Proportional to 368,998.80, 553,512.75 and 102,782.58

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Solution

The fourth proportional to 368,998.80, 553,512.75 and 102,782.58 is: 154,177.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,998.80 : 553,512.75 = 102,782.58 : x
  2. Step 2: Convert to fraction form
    368,998.80/553,512.75 = 102,782.58/x
  3. Step 3: Cross multiply
    368,998.80x = 553,512.75 × 102,782.58
  4. Step 4: Simplify right side
    368,998.80x = 56,891,468,507.90
  5. Step 5: Solve for x
    x = 56,891,468,507.90/368,998.80
  6. Step 6: Final answer
    x = 154,177.92

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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.