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Finding the Fourth Proportional to 571,991, 858,224.46 and 251,979.08

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Solution

The fourth proportional to 571,991, 858,224.46 and 251,979.08 is: 378,073.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,991 : 858,224.46 = 251,979.08 : x
  2. Step 2: Convert to fraction form
    571,991/858,224.46 = 251,979.08/x
  3. Step 3: Cross multiply
    571,991x = 858,224.46 × 251,979.08
  4. Step 4: Simplify right side
    571,991x = 216,254,609,864.30
  5. Step 5: Solve for x
    x = 216,254,609,864.30/571,991
  6. Step 6: Final answer
    x = 378,073.45

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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.