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Finding the Fourth Proportional to 353,122.80, 528,906.60 and 313,724.40

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Solution

The fourth proportional to 353,122.80, 528,906.60 and 313,724.40 is: 469,895.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,122.80 : 528,906.60 = 313,724.40 : x
  2. Step 2: Convert to fraction form
    353,122.80/528,906.60 = 313,724.40/x
  3. Step 3: Cross multiply
    353,122.80x = 528,906.60 × 313,724.40
  4. Step 4: Simplify right side
    353,122.80x = 165,930,905,741.04
  5. Step 5: Solve for x
    x = 165,930,905,741.04/353,122.80
  6. Step 6: Final answer
    x = 469,895.76

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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.