Home / 215,828.20-323,819.10-208,148.20

Finding the Fourth Proportional to 215,828.20, 323,819.10 and 208,148.20

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Solution

The fourth proportional to 215,828.20, 323,819.10 and 208,148.20 is: 312,296.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,828.20 : 323,819.10 = 208,148.20 : x
  2. Step 2: Convert to fraction form
    215,828.20/323,819.10 = 208,148.20/x
  3. Step 3: Cross multiply
    215,828.20x = 323,819.10 × 208,148.20
  4. Step 4: Simplify right side
    215,828.20x = 67,402,362,790.62
  5. Step 5: Solve for x
    x = 67,402,362,790.62/215,828.20
  6. Step 6: Final answer
    x = 312,296.37

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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.