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Finding the Fourth Proportional to 353,355.15, 528,695.19 and 209,338.29

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Solution

The fourth proportional to 353,355.15, 528,695.19 and 209,338.29 is: 313,215.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,355.15 : 528,695.19 = 209,338.29 : x
  2. Step 2: Convert to fraction form
    353,355.15/528,695.19 = 209,338.29/x
  3. Step 3: Cross multiply
    353,355.15x = 528,695.19 × 209,338.29
  4. Step 4: Simplify right side
    353,355.15x = 110,676,146,711.44
  5. Step 5: Solve for x
    x = 110,676,146,711.44/353,355.15
  6. Step 6: Final answer
    x = 313,215.04

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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.