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Finding the Fourth Proportional to 373,806.10, 515,834.40 and 212,645.98

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Solution

The fourth proportional to 373,806.10, 515,834.40 and 212,645.98 is: 293,441.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,806.10 : 515,834.40 = 212,645.98 : x
  2. Step 2: Convert to fraction form
    373,806.10/515,834.40 = 212,645.98/x
  3. Step 3: Cross multiply
    373,806.10x = 515,834.40 × 212,645.98
  4. Step 4: Simplify right side
    373,806.10x = 109,690,111,505.71
  5. Step 5: Solve for x
    x = 109,690,111,505.71/373,806.10
  6. Step 6: Final answer
    x = 293,441.20

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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.