Home / 278,915.09-384,902.87-151,590.69

Finding the Fourth Proportional to 278,915.09, 384,902.87 and 151,590.69

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Solution

The fourth proportional to 278,915.09, 384,902.87 and 151,590.69 is: 209,195.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,915.09 : 384,902.87 = 151,590.69 : x
  2. Step 2: Convert to fraction form
    278,915.09/384,902.87 = 151,590.69/x
  3. Step 3: Cross multiply
    278,915.09x = 384,902.87 × 151,590.69
  4. Step 4: Simplify right side
    278,915.09x = 58,347,691,646.28
  5. Step 5: Solve for x
    x = 58,347,691,646.28/278,915.09
  6. Step 6: Final answer
    x = 209,195.18

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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.