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Finding the Fourth Proportional to 202,823.80, 304,235.70 and 128,028.40

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Solution

The fourth proportional to 202,823.80, 304,235.70 and 128,028.40 is: 192,042.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,823.80 : 304,235.70 = 128,028.40 : x
  2. Step 2: Convert to fraction form
    202,823.80/304,235.70 = 128,028.40/x
  3. Step 3: Cross multiply
    202,823.80x = 304,235.70 × 128,028.40
  4. Step 4: Simplify right side
    202,823.80x = 38,950,809,893.88
  5. Step 5: Solve for x
    x = 38,950,809,893.88/202,823.80
  6. Step 6: Final answer
    x = 192,042.60

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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.