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Finding the Fourth Proportional to 333,998.38, 500,998.57 and 81,278.91

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Solution

The fourth proportional to 333,998.38, 500,998.57 and 81,278.91 is: 121,918.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    333,998.38 : 500,998.57 = 81,278.91 : x
  2. Step 2: Convert to fraction form
    333,998.38/500,998.57 = 81,278.91/x
  3. Step 3: Cross multiply
    333,998.38x = 500,998.57 × 81,278.91
  4. Step 4: Simplify right side
    333,998.38x = 40,720,615,176.17
  5. Step 5: Solve for x
    x = 40,720,615,176.17/333,998.38
  6. Step 6: Final answer
    x = 121,918.60

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1.5x scale

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.