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Finding the Fourth Proportional to 515,163.72, 710,858.22 and 285,718.26

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Solution

The fourth proportional to 515,163.72, 710,858.22 and 285,718.26 is: 394,253.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,163.72 : 710,858.22 = 285,718.26 : x
  2. Step 2: Convert to fraction form
    515,163.72/710,858.22 = 285,718.26/x
  3. Step 3: Cross multiply
    515,163.72x = 710,858.22 × 285,718.26
  4. Step 4: Simplify right side
    515,163.72x = 203,105,173,725.10
  5. Step 5: Solve for x
    x = 203,105,173,725.10/515,163.72
  6. Step 6: Final answer
    x = 394,253.64

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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.