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Finding the Fourth Proportional to 552,128.67, 828,232.56 and 147,318.75

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Solution

The fourth proportional to 552,128.67, 828,232.56 and 147,318.75 is: 220,988.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,128.67 : 828,232.56 = 147,318.75 : x
  2. Step 2: Convert to fraction form
    552,128.67/828,232.56 = 147,318.75/x
  3. Step 3: Cross multiply
    552,128.67x = 828,232.56 × 147,318.75
  4. Step 4: Simplify right side
    552,128.67x = 122,014,185,448.50
  5. Step 5: Solve for x
    x = 122,014,185,448.50/552,128.67
  6. Step 6: Final answer
    x = 220,988.68

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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.