Home / 328,204.12-492,305.94-78,886.12

Finding the Fourth Proportional to 328,204.12, 492,305.94 and 78,886.12

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Solution

The fourth proportional to 328,204.12, 492,305.94 and 78,886.12 is: 118,329.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,204.12 : 492,305.94 = 78,886.12 : x
  2. Step 2: Convert to fraction form
    328,204.12/492,305.94 = 78,886.12/x
  3. Step 3: Cross multiply
    328,204.12x = 492,305.94 × 78,886.12
  4. Step 4: Simplify right side
    328,204.12x = 38,836,105,459.55
  5. Step 5: Solve for x
    x = 38,836,105,459.55/328,204.12
  6. Step 6: Final answer
    x = 118,329.12

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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.