Home / 278,729.35-384,640.05-162,435.41

Finding the Fourth Proportional to 278,729.35, 384,640.05 and 162,435.41

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Solution

The fourth proportional to 278,729.35, 384,640.05 and 162,435.41 is: 224,157.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,729.35 : 384,640.05 = 162,435.41 : x
  2. Step 2: Convert to fraction form
    278,729.35/384,640.05 = 162,435.41/x
  3. Step 3: Cross multiply
    278,729.35x = 384,640.05 × 162,435.41
  4. Step 4: Simplify right side
    278,729.35x = 62,479,161,488.79
  5. Step 5: Solve for x
    x = 62,479,161,488.79/278,729.35
  6. Step 6: Final answer
    x = 224,157.10

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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.