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Finding the Fourth Proportional to 221,029.40, 331,544.10 and 54,817.40

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Solution

The fourth proportional to 221,029.40, 331,544.10 and 54,817.40 is: 82,226.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,029.40 : 331,544.10 = 54,817.40 : x
  2. Step 2: Convert to fraction form
    221,029.40/331,544.10 = 54,817.40/x
  3. Step 3: Cross multiply
    221,029.40x = 331,544.10 × 54,817.40
  4. Step 4: Simplify right side
    221,029.40x = 18,174,385,547.34
  5. Step 5: Solve for x
    x = 18,174,385,547.34/221,029.40
  6. Step 6: Final answer
    x = 82,226.10

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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.