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Finding the Fourth Proportional to 333,639.38, 500,459.88 and 80,918.84

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Solution

The fourth proportional to 333,639.38, 500,459.88 and 80,918.84 is: 121,378.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    333,639.38 : 500,459.88 = 80,918.84 : x
  2. Step 2: Convert to fraction form
    333,639.38/500,459.88 = 80,918.84/x
  3. Step 3: Cross multiply
    333,639.38x = 500,459.88 × 80,918.84
  4. Step 4: Simplify right side
    333,639.38x = 40,496,632,956.14
  5. Step 5: Solve for x
    x = 40,496,632,956.14/333,639.38
  6. Step 6: Final answer
    x = 121,378.46

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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.