Home / 321,526.12-482,269.74-143,985.48

Finding the Fourth Proportional to 321,526.12, 482,269.74 and 143,985.48

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Solution

The fourth proportional to 321,526.12, 482,269.74 and 143,985.48 is: 215,969.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,526.12 : 482,269.74 = 143,985.48 : x
  2. Step 2: Convert to fraction form
    321,526.12/482,269.74 = 143,985.48/x
  3. Step 3: Cross multiply
    321,526.12x = 482,269.74 × 143,985.48
  4. Step 4: Simplify right side
    321,526.12x = 69,439,840,003.38
  5. Step 5: Solve for x
    x = 69,439,840,003.38/321,526.12
  6. Step 6: Final answer
    x = 215,969.51

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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.