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Finding the Fourth Proportional to 552,014.60, 828,021.90 and 172,938.50

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Solution

The fourth proportional to 552,014.60, 828,021.90 and 172,938.50 is: 259,407.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,014.60 : 828,021.90 = 172,938.50 : x
  2. Step 2: Convert to fraction form
    552,014.60/828,021.90 = 172,938.50/x
  3. Step 3: Cross multiply
    552,014.60x = 828,021.90 × 172,938.50
  4. Step 4: Simplify right side
    552,014.60x = 143,196,865,353.15
  5. Step 5: Solve for x
    x = 143,196,865,353.15/552,014.60
  6. Step 6: Final answer
    x = 259,407.75

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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.