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Finding the Fourth Proportional to 202,327.65, 303,491.48 and 139,342.05

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Solution

The fourth proportional to 202,327.65, 303,491.48 and 139,342.05 is: 209,013.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,327.65 : 303,491.48 = 139,342.05 : x
  2. Step 2: Convert to fraction form
    202,327.65/303,491.48 = 139,342.05/x
  3. Step 3: Cross multiply
    202,327.65x = 303,491.48 × 139,342.05
  4. Step 4: Simplify right side
    202,327.65x = 42,289,124,284.02
  5. Step 5: Solve for x
    x = 42,289,124,284.02/202,327.65
  6. Step 6: Final answer
    x = 209,013.08

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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.