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Finding the Fourth Proportional to 387,665.64, 534,900.15 and 226,489.56

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Solution

The fourth proportional to 387,665.64, 534,900.15 and 226,489.56 is: 312,509.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,665.64 : 534,900.15 = 226,489.56 : x
  2. Step 2: Convert to fraction form
    387,665.64/534,900.15 = 226,489.56/x
  3. Step 3: Cross multiply
    387,665.64x = 534,900.15 × 226,489.56
  4. Step 4: Simplify right side
    387,665.64x = 121,149,299,617.43
  5. Step 5: Solve for x
    x = 121,149,299,617.43/387,665.64
  6. Step 6: Final answer
    x = 312,509.77

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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.