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Finding the Fourth Proportional to 481,309.98, 721,895.85 and 148,842.78

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Solution

The fourth proportional to 481,309.98, 721,895.85 and 148,842.78 is: 223,242.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,309.98 : 721,895.85 = 148,842.78 : x
  2. Step 2: Convert to fraction form
    481,309.98/721,895.85 = 148,842.78/x
  3. Step 3: Cross multiply
    481,309.98x = 721,895.85 × 148,842.78
  4. Step 4: Simplify right side
    481,309.98x = 107,448,985,184.46
  5. Step 5: Solve for x
    x = 107,448,985,184.46/481,309.98
  6. Step 6: Final answer
    x = 223,242.79

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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.