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Finding the Fourth Proportional to 202,203.90, 303,305.85 and 139,218.30

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Solution

The fourth proportional to 202,203.90, 303,305.85 and 139,218.30 is: 208,827.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,203.90 : 303,305.85 = 139,218.30 : x
  2. Step 2: Convert to fraction form
    202,203.90/303,305.85 = 139,218.30/x
  3. Step 3: Cross multiply
    202,203.90x = 303,305.85 × 139,218.30
  4. Step 4: Simplify right side
    202,203.90x = 42,225,724,817.06
  5. Step 5: Solve for x
    x = 42,225,724,817.06/202,203.90
  6. Step 6: Final answer
    x = 208,827.45

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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.