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Finding the Fourth Proportional to 372,679.50, 514,295.55 and 211,565.10

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Solution

The fourth proportional to 372,679.50, 514,295.55 and 211,565.10 is: 291,958.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,679.50 : 514,295.55 = 211,565.10 : x
  2. Step 2: Convert to fraction form
    372,679.50/514,295.55 = 211,565.10/x
  3. Step 3: Cross multiply
    372,679.50x = 514,295.55 × 211,565.10
  4. Step 4: Simplify right side
    372,679.50x = 108,806,989,465.31
  5. Step 5: Solve for x
    x = 108,806,989,465.31/372,679.50
  6. Step 6: Final answer
    x = 291,958.61

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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.