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Finding the Fourth Proportional to 199,034.20, 297,895.20 and 139,985.20

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Solution

The fourth proportional to 199,034.20, 297,895.20 and 139,985.20 is: 209,516.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,034.20 : 297,895.20 = 139,985.20 : x
  2. Step 2: Convert to fraction form
    199,034.20/297,895.20 = 139,985.20/x
  3. Step 3: Cross multiply
    199,034.20x = 297,895.20 × 139,985.20
  4. Step 4: Simplify right side
    199,034.20x = 41,700,919,151.04
  5. Step 5: Solve for x
    x = 41,700,919,151.04/199,034.20
  6. Step 6: Final answer
    x = 209,516.35

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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.