Home / 278,962.20-384,963.30-151,641

Finding the Fourth Proportional to 278,962.20, 384,963.30 and 151,641

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Solution

The fourth proportional to 278,962.20, 384,963.30 and 151,641 is: 209,262.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,962.20 : 384,963.30 = 151,641 : x
  2. Step 2: Convert to fraction form
    278,962.20/384,963.30 = 151,641/x
  3. Step 3: Cross multiply
    278,962.20x = 384,963.30 × 151,641
  4. Step 4: Simplify right side
    278,962.20x = 58,376,219,775.30
  5. Step 5: Solve for x
    x = 58,376,219,775.30/278,962.20
  6. Step 6: Final answer
    x = 209,262.11

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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.