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Finding the Fourth Proportional to 202,295.80, 303,443.70 and 139,310.20

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Solution

The fourth proportional to 202,295.80, 303,443.70 and 139,310.20 is: 208,965.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,295.80 : 303,443.70 = 139,310.20 : x
  2. Step 2: Convert to fraction form
    202,295.80/303,443.70 = 139,310.20/x
  3. Step 3: Cross multiply
    202,295.80x = 303,443.70 × 139,310.20
  4. Step 4: Simplify right side
    202,295.80x = 42,272,802,535.74
  5. Step 5: Solve for x
    x = 42,272,802,535.74/202,295.80
  6. Step 6: Final answer
    x = 208,965.30

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1.5x scale

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.