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Finding the Fourth Proportional to 523,091.52, 721,919.52 and 308,300.88

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Solution

The fourth proportional to 523,091.52, 721,919.52 and 308,300.88 is: 425,486.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,091.52 : 721,919.52 = 308,300.88 : x
  2. Step 2: Convert to fraction form
    523,091.52/721,919.52 = 308,300.88/x
  3. Step 3: Cross multiply
    523,091.52x = 721,919.52 × 308,300.88
  4. Step 4: Simplify right side
    523,091.52x = 222,568,423,305.18
  5. Step 5: Solve for x
    x = 222,568,423,305.18/523,091.52
  6. Step 6: Final answer
    x = 425,486.58

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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.