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Finding the Fourth Proportional to 553,639.44, 829,934.28 and 179,400

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Solution

The fourth proportional to 553,639.44, 829,934.28 and 179,400 is: 268,929.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,639.44 : 829,934.28 = 179,400 : x
  2. Step 2: Convert to fraction form
    553,639.44/829,934.28 = 179,400/x
  3. Step 3: Cross multiply
    553,639.44x = 829,934.28 × 179,400
  4. Step 4: Simplify right side
    553,639.44x = 148,890,209,832
  5. Step 5: Solve for x
    x = 148,890,209,832/553,639.44
  6. Step 6: Final answer
    x = 268,929.92

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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.