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Finding the Fourth Proportional to 485,985.08, 728,950.37 and 149,024.81

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Solution

The fourth proportional to 485,985.08, 728,950.37 and 149,024.81 is: 223,528.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,985.08 : 728,950.37 = 149,024.81 : x
  2. Step 2: Convert to fraction form
    485,985.08/728,950.37 = 149,024.81/x
  3. Step 3: Cross multiply
    485,985.08x = 728,950.37 × 149,024.81
  4. Step 4: Simplify right side
    485,985.08x = 108,631,690,626.45
  5. Step 5: Solve for x
    x = 108,631,690,626.45/485,985.08
  6. Step 6: Final answer
    x = 223,528.86

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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.