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Finding the Fourth Proportional to 387,165.90, 534,272.43 and 226,029.90

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Solution

The fourth proportional to 387,165.90, 534,272.43 and 226,029.90 is: 311,911.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,165.90 : 534,272.43 = 226,029.90 : x
  2. Step 2: Convert to fraction form
    387,165.90/534,272.43 = 226,029.90/x
  3. Step 3: Cross multiply
    387,165.90x = 534,272.43 × 226,029.90
  4. Step 4: Simplify right side
    387,165.90x = 120,761,543,925.66
  5. Step 5: Solve for x
    x = 120,761,543,925.66/387,165.90
  6. Step 6: Final answer
    x = 311,911.62

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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.