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Finding the Fourth Proportional to 425,581.02, 587,293.78 and 231,990.51

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Solution

The fourth proportional to 425,581.02, 587,293.78 and 231,990.51 is: 320,142.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,581.02 : 587,293.78 = 231,990.51 : x
  2. Step 2: Convert to fraction form
    425,581.02/587,293.78 = 231,990.51/x
  3. Step 3: Cross multiply
    425,581.02x = 587,293.78 × 231,990.51
  4. Step 4: Simplify right side
    425,581.02x = 136,246,583,832.02
  5. Step 5: Solve for x
    x = 136,246,583,832.02/425,581.02
  6. Step 6: Final answer
    x = 320,142.53

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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.