Home / 221,009.27-304,994.01-129,133.94

Finding the Fourth Proportional to 221,009.27, 304,994.01 and 129,133.94

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Solution

The fourth proportional to 221,009.27, 304,994.01 and 129,133.94 is: 178,205.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,009.27 : 304,994.01 = 129,133.94 : x
  2. Step 2: Convert to fraction form
    221,009.27/304,994.01 = 129,133.94/x
  3. Step 3: Cross multiply
    221,009.27x = 304,994.01 × 129,133.94
  4. Step 4: Simplify right side
    221,009.27x = 39,385,076,662.73
  5. Step 5: Solve for x
    x = 39,385,076,662.73/221,009.27
  6. Step 6: Final answer
    x = 178,205.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.