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Finding the Fourth Proportional to 553,112, 829,668 and 159,128

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Solution

The fourth proportional to 553,112, 829,668 and 159,128 is: 238,692

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,112 : 829,668 = 159,128 : x
  2. Step 2: Convert to fraction form
    553,112/829,668 = 159,128/x
  3. Step 3: Cross multiply
    553,112x = 829,668 × 159,128
  4. Step 4: Simplify right side
    553,112x = 132,023,409,504
  5. Step 5: Solve for x
    x = 132,023,409,504/553,112
  6. Step 6: Final answer
    x = 238,692

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