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Finding the Fourth Proportional to 387,252.44, 534,458.48 and 217,486.56

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Solution

The fourth proportional to 387,252.44, 534,458.48 and 217,486.56 is: 300,159.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,252.44 : 534,458.48 = 217,486.56 : x
  2. Step 2: Convert to fraction form
    387,252.44/534,458.48 = 217,486.56/x
  3. Step 3: Cross multiply
    387,252.44x = 534,458.48 × 217,486.56
  4. Step 4: Simplify right side
    387,252.44x = 116,237,536,278.03
  5. Step 5: Solve for x
    x = 116,237,536,278.03/387,252.44
  6. Step 6: Final answer
    x = 300,159.60

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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.