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Finding the Fourth Proportional to 215,689.95, 323,535.75 and 65,929.65

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Solution

The fourth proportional to 215,689.95, 323,535.75 and 65,929.65 is: 98,894.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,689.95 : 323,535.75 = 65,929.65 : x
  2. Step 2: Convert to fraction form
    215,689.95/323,535.75 = 65,929.65/x
  3. Step 3: Cross multiply
    215,689.95x = 323,535.75 × 65,929.65
  4. Step 4: Simplify right side
    215,689.95x = 21,330,598,759.99
  5. Step 5: Solve for x
    x = 21,330,598,759.99/215,689.95
  6. Step 6: Final answer
    x = 98,894.73

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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.