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Finding the Fourth Proportional to 315,847.52, 435,859.44 and 172,607.12

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Solution

The fourth proportional to 315,847.52, 435,859.44 and 172,607.12 is: 238,192.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,847.52 : 435,859.44 = 172,607.12 : x
  2. Step 2: Convert to fraction form
    315,847.52/435,859.44 = 172,607.12/x
  3. Step 3: Cross multiply
    315,847.52x = 435,859.44 × 172,607.12
  4. Step 4: Simplify right side
    315,847.52x = 75,232,442,663.21
  5. Step 5: Solve for x
    x = 75,232,442,663.21/315,847.52
  6. Step 6: Final answer
    x = 238,192.29

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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.