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Finding the Fourth Proportional to 202,883.20, 304,574.40 and 128,003.20

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Solution

The fourth proportional to 202,883.20, 304,574.40 and 128,003.20 is: 192,162.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,883.20 : 304,574.40 = 128,003.20 : x
  2. Step 2: Convert to fraction form
    202,883.20/304,574.40 = 128,003.20/x
  3. Step 3: Cross multiply
    202,883.20x = 304,574.40 × 128,003.20
  4. Step 4: Simplify right side
    202,883.20x = 38,986,497,838.08
  5. Step 5: Solve for x
    x = 38,986,497,838.08/202,883.20
  6. Step 6: Final answer
    x = 192,162.28

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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.