Home / 315,865.27-435,893.02-172,625.28

Finding the Fourth Proportional to 315,865.27, 435,893.02 and 172,625.28

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Solution

The fourth proportional to 315,865.27, 435,893.02 and 172,625.28 is: 238,222.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,865.27 : 435,893.02 = 172,625.28 : x
  2. Step 2: Convert to fraction form
    315,865.27/435,893.02 = 172,625.28/x
  3. Step 3: Cross multiply
    315,865.27x = 435,893.02 × 172,625.28
  4. Step 4: Simplify right side
    315,865.27x = 75,246,153,046.89
  5. Step 5: Solve for x
    x = 75,246,153,046.89/315,865.27
  6. Step 6: Final answer
    x = 238,222.31

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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.