Home / 278,223.05-383,529.20-217,688.58

Finding the Fourth Proportional to 278,223.05, 383,529.20 and 217,688.58

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Solution

The fourth proportional to 278,223.05, 383,529.20 and 217,688.58 is: 300,082.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,223.05 : 383,529.20 = 217,688.58 : x
  2. Step 2: Convert to fraction form
    278,223.05/383,529.20 = 217,688.58/x
  3. Step 3: Cross multiply
    278,223.05x = 383,529.20 × 217,688.58
  4. Step 4: Simplify right side
    278,223.05x = 83,489,925,848.09
  5. Step 5: Solve for x
    x = 83,489,925,848.09/278,223.05
  6. Step 6: Final answer
    x = 300,082.70

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1.5x scale

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.