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Finding the Fourth Proportional to 610,917.09, 916,732.85 and 255,901.38

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Solution

The fourth proportional to 610,917.09, 916,732.85 and 255,901.38 is: 384,001.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,917.09 : 916,732.85 = 255,901.38 : x
  2. Step 2: Convert to fraction form
    610,917.09/916,732.85 = 255,901.38/x
  3. Step 3: Cross multiply
    610,917.09x = 916,732.85 × 255,901.38
  4. Step 4: Simplify right side
    610,917.09x = 234,593,201,406.33
  5. Step 5: Solve for x
    x = 234,593,201,406.33/610,917.09
  6. Step 6: Final answer
    x = 384,001.70

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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.