Home / 278,123.24-383,872.75-163,438.74

Finding the Fourth Proportional to 278,123.24, 383,872.75 and 163,438.74

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Solution

The fourth proportional to 278,123.24, 383,872.75 and 163,438.74 is: 225,582.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,123.24 : 383,872.75 = 163,438.74 : x
  2. Step 2: Convert to fraction form
    278,123.24/383,872.75 = 163,438.74/x
  3. Step 3: Cross multiply
    278,123.24x = 383,872.75 × 163,438.74
  4. Step 4: Simplify right side
    278,123.24x = 62,739,678,171.74
  5. Step 5: Solve for x
    x = 62,739,678,171.74/278,123.24
  6. Step 6: Final answer
    x = 225,582.29

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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.