Home / 217,834.57-326,278.68-105,278.74

Finding the Fourth Proportional to 217,834.57, 326,278.68 and 105,278.74

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Solution

The fourth proportional to 217,834.57, 326,278.68 and 105,278.74 is: 157,689.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,834.57 : 326,278.68 = 105,278.74 : x
  2. Step 2: Convert to fraction form
    217,834.57/326,278.68 = 105,278.74/x
  3. Step 3: Cross multiply
    217,834.57x = 326,278.68 × 105,278.74
  4. Step 4: Simplify right side
    217,834.57x = 34,350,208,307.84
  5. Step 5: Solve for x
    x = 34,350,208,307.84/217,834.57
  6. Step 6: Final answer
    x = 157,689.42

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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.