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Finding the Fourth Proportional to 372,690.12, 514,318.59 and 211,550.12

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Solution

The fourth proportional to 372,690.12, 514,318.59 and 211,550.12 is: 291,942.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,690.12 : 514,318.59 = 211,550.12 : x
  2. Step 2: Convert to fraction form
    372,690.12/514,318.59 = 211,550.12/x
  3. Step 3: Cross multiply
    372,690.12x = 514,318.59 × 211,550.12
  4. Step 4: Simplify right side
    372,690.12x = 108,804,156,861.14
  5. Step 5: Solve for x
    x = 108,804,156,861.14/372,690.12
  6. Step 6: Final answer
    x = 291,942.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.