Home / 258,528.02-387,789.08-100,867.20

Finding the Fourth Proportional to 258,528.02, 387,789.08 and 100,867.20

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Solution

The fourth proportional to 258,528.02, 387,789.08 and 100,867.20 is: 151,299.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,528.02 : 387,789.08 = 100,867.20 : x
  2. Step 2: Convert to fraction form
    258,528.02/387,789.08 = 100,867.20/x
  3. Step 3: Cross multiply
    258,528.02x = 387,789.08 × 100,867.20
  4. Step 4: Simplify right side
    258,528.02x = 39,115,198,690.18
  5. Step 5: Solve for x
    x = 39,115,198,690.18/258,528.02
  6. Step 6: Final answer
    x = 151,299.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.