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Finding the Fourth Proportional to 538,663.60, 807,995.40 and 164,686.60

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Solution

The fourth proportional to 538,663.60, 807,995.40 and 164,686.60 is: 247,029.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,663.60 : 807,995.40 = 164,686.60 : x
  2. Step 2: Convert to fraction form
    538,663.60/807,995.40 = 164,686.60/x
  3. Step 3: Cross multiply
    538,663.60x = 807,995.40 × 164,686.60
  4. Step 4: Simplify right side
    538,663.60x = 133,066,015,241.64
  5. Step 5: Solve for x
    x = 133,066,015,241.64/538,663.60
  6. Step 6: Final answer
    x = 247,029.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.