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Finding the Fourth Proportional to 338,539.68, 508,140 and 161,169.12

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Solution

The fourth proportional to 338,539.68, 508,140 and 161,169.12 is: 241,911.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,539.68 : 508,140 = 161,169.12 : x
  2. Step 2: Convert to fraction form
    338,539.68/508,140 = 161,169.12/x
  3. Step 3: Cross multiply
    338,539.68x = 508,140 × 161,169.12
  4. Step 4: Simplify right side
    338,539.68x = 81,896,476,636.80
  5. Step 5: Solve for x
    x = 81,896,476,636.80/338,539.68
  6. Step 6: Final answer
    x = 241,911.01

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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.