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Finding the Fourth Proportional to 219,465.30, 329,209.34 and 69,717.31

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Solution

The fourth proportional to 219,465.30, 329,209.34 and 69,717.31 is: 104,579.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,465.30 : 329,209.34 = 69,717.31 : x
  2. Step 2: Convert to fraction form
    219,465.30/329,209.34 = 69,717.31/x
  3. Step 3: Cross multiply
    219,465.30x = 329,209.34 × 69,717.31
  4. Step 4: Simplify right side
    219,465.30x = 22,951,588,636.15
  5. Step 5: Solve for x
    x = 22,951,588,636.15/219,465.30
  6. Step 6: Final answer
    x = 104,579.58

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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.