Home / 353,229.85-487,285.80-209,888.40

Finding the Fourth Proportional to 353,229.85, 487,285.80 and 209,888.40

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Solution

The fourth proportional to 353,229.85, 487,285.80 and 209,888.40 is: 289,544.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,229.85 : 487,285.80 = 209,888.40 : x
  2. Step 2: Convert to fraction form
    353,229.85/487,285.80 = 209,888.40/x
  3. Step 3: Cross multiply
    353,229.85x = 487,285.80 × 209,888.40
  4. Step 4: Simplify right side
    353,229.85x = 102,275,636,904.72
  5. Step 5: Solve for x
    x = 102,275,636,904.72/353,229.85
  6. Step 6: Final answer
    x = 289,544.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.