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Finding the Fourth Proportional to 202,108.20, 303,411.90 and 127,228.20

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Solution

The fourth proportional to 202,108.20, 303,411.90 and 127,228.20 is: 190,999.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,108.20 : 303,411.90 = 127,228.20 : x
  2. Step 2: Convert to fraction form
    202,108.20/303,411.90 = 127,228.20/x
  3. Step 3: Cross multiply
    202,108.20x = 303,411.90 × 127,228.20
  4. Step 4: Simplify right side
    202,108.20x = 38,602,549,895.58
  5. Step 5: Solve for x
    x = 38,602,549,895.58/202,108.20
  6. Step 6: Final answer
    x = 190,999.42

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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.