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Finding the Fourth Proportional to 228,933.80, 342,428.70 and 205,411.40

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Solution

The fourth proportional to 228,933.80, 342,428.70 and 205,411.40 is: 307,244.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,933.80 : 342,428.70 = 205,411.40 : x
  2. Step 2: Convert to fraction form
    228,933.80/342,428.70 = 205,411.40/x
  3. Step 3: Cross multiply
    228,933.80x = 342,428.70 × 205,411.40
  4. Step 4: Simplify right side
    228,933.80x = 70,338,758,667.18
  5. Step 5: Solve for x
    x = 70,338,758,667.18/228,933.80
  6. Step 6: Final answer
    x = 307,244.97

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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.