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Finding the Fourth Proportional to 552,638.20, 829,394.70 and 215,840.20

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Solution

The fourth proportional to 552,638.20, 829,394.70 and 215,840.20 is: 323,931.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,638.20 : 829,394.70 = 215,840.20 : x
  2. Step 2: Convert to fraction form
    552,638.20/829,394.70 = 215,840.20/x
  3. Step 3: Cross multiply
    552,638.20x = 829,394.70 × 215,840.20
  4. Step 4: Simplify right side
    552,638.20x = 179,016,717,926.94
  5. Step 5: Solve for x
    x = 179,016,717,926.94/552,638.20
  6. Step 6: Final answer
    x = 323,931.13

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1.5x scale

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.