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Finding the Fourth Proportional to 353,902.90, 530,854.35 and 339,906.10

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Solution

The fourth proportional to 353,902.90, 530,854.35 and 339,906.10 is: 509,859.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,902.90 : 530,854.35 = 339,906.10 : x
  2. Step 2: Convert to fraction form
    353,902.90/530,854.35 = 339,906.10/x
  3. Step 3: Cross multiply
    353,902.90x = 530,854.35 × 339,906.10
  4. Step 4: Simplify right side
    353,902.90x = 180,440,631,776.54
  5. Step 5: Solve for x
    x = 180,440,631,776.54/353,902.90
  6. Step 6: Final answer
    x = 509,859.15

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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.