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Finding the Fourth Proportional to 387,670.53, 534,906.90 and 226,494.45

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Solution

The fourth proportional to 387,670.53, 534,906.90 and 226,494.45 is: 312,516.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,670.53 : 534,906.90 = 226,494.45 : x
  2. Step 2: Convert to fraction form
    387,670.53/534,906.90 = 226,494.45/x
  3. Step 3: Cross multiply
    387,670.53x = 534,906.90 × 226,494.45
  4. Step 4: Simplify right side
    387,670.53x = 121,153,444,116.71
  5. Step 5: Solve for x
    x = 121,153,444,116.71/387,670.53
  6. Step 6: Final answer
    x = 312,516.52

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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.