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Finding the Fourth Proportional to 327,980.78, 492,114.12 and 114,901.55

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Solution

The fourth proportional to 327,980.78, 492,114.12 and 114,901.55 is: 172,402.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,980.78 : 492,114.12 = 114,901.55 : x
  2. Step 2: Convert to fraction form
    327,980.78/492,114.12 = 114,901.55/x
  3. Step 3: Cross multiply
    327,980.78x = 492,114.12 × 114,901.55
  4. Step 4: Simplify right side
    327,980.78x = 56,544,675,164.89
  5. Step 5: Solve for x
    x = 56,544,675,164.89/327,980.78
  6. Step 6: Final answer
    x = 172,402.40

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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.