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Finding the Fourth Proportional to 372,186.80, 558,107.40 and 161,716.40

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Solution

The fourth proportional to 372,186.80, 558,107.40 and 161,716.40 is: 242,499.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,186.80 : 558,107.40 = 161,716.40 : x
  2. Step 2: Convert to fraction form
    372,186.80/558,107.40 = 161,716.40/x
  3. Step 3: Cross multiply
    372,186.80x = 558,107.40 × 161,716.40
  4. Step 4: Simplify right side
    372,186.80x = 90,255,119,541.36
  5. Step 5: Solve for x
    x = 90,255,119,541.36/372,186.80
  6. Step 6: Final answer
    x = 242,499.52

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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.