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Finding the Fourth Proportional to 552,618.20, 829,364.70 and 215,820.20

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Solution

The fourth proportional to 552,618.20, 829,364.70 and 215,820.20 is: 323,901.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,618.20 : 829,364.70 = 215,820.20 : x
  2. Step 2: Convert to fraction form
    552,618.20/829,364.70 = 215,820.20/x
  3. Step 3: Cross multiply
    552,618.20x = 829,364.70 × 215,820.20
  4. Step 4: Simplify right side
    552,618.20x = 178,993,655,426.94
  5. Step 5: Solve for x
    x = 178,993,655,426.94/552,618.20
  6. Step 6: Final answer
    x = 323,901.12

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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.