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Finding the Fourth Proportional to 517,135.72, 713,621.22 and 290,767.72

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Solution

The fourth proportional to 517,135.72, 713,621.22 and 290,767.72 is: 401,244.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,135.72 : 713,621.22 = 290,767.72 : x
  2. Step 2: Convert to fraction form
    517,135.72/713,621.22 = 290,767.72/x
  3. Step 3: Cross multiply
    517,135.72x = 713,621.22 × 290,767.72
  4. Step 4: Simplify right side
    517,135.72x = 207,498,015,083.02
  5. Step 5: Solve for x
    x = 207,498,015,083.02/517,135.72
  6. Step 6: Final answer
    x = 401,244.79

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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.