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Finding the Fourth Proportional to 485,980.37, 729,077.18 and 149,046.36

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Solution

The fourth proportional to 485,980.37, 729,077.18 and 149,046.36 is: 223,602.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,980.37 : 729,077.18 = 149,046.36 : x
  2. Step 2: Convert to fraction form
    485,980.37/729,077.18 = 149,046.36/x
  3. Step 3: Cross multiply
    485,980.37x = 729,077.18 × 149,046.36
  4. Step 4: Simplify right side
    485,980.37x = 108,666,299,092.83
  5. Step 5: Solve for x
    x = 108,666,299,092.83/485,980.37
  6. Step 6: Final answer
    x = 223,602.24

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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.