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Finding the Fourth Proportional to 387,425.88, 534,623.22 and 226,326.60

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Solution

The fourth proportional to 387,425.88, 534,623.22 and 226,326.60 is: 312,316.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,425.88 : 534,623.22 = 226,326.60 : x
  2. Step 2: Convert to fraction form
    387,425.88/534,623.22 = 226,326.60/x
  3. Step 3: Cross multiply
    387,425.88x = 534,623.22 × 226,326.60
  4. Step 4: Simplify right side
    387,425.88x = 120,999,455,663.65
  5. Step 5: Solve for x
    x = 120,999,455,663.65/387,425.88
  6. Step 6: Final answer
    x = 312,316.40

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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.