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Finding the Fourth Proportional to 338,975.20, 508,459.16 and 82,810.08

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Solution

The fourth proportional to 338,975.20, 508,459.16 and 82,810.08 is: 124,214.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,975.20 : 508,459.16 = 82,810.08 : x
  2. Step 2: Convert to fraction form
    338,975.20/508,459.16 = 82,810.08/x
  3. Step 3: Cross multiply
    338,975.20x = 508,459.16 × 82,810.08
  4. Step 4: Simplify right side
    338,975.20x = 42,105,543,716.33
  5. Step 5: Solve for x
    x = 42,105,543,716.33/338,975.20
  6. Step 6: Final answer
    x = 124,214.23

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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.