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Finding the Fourth Proportional to 379,911.84, 569,868.82 and 155,272.31

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Solution

The fourth proportional to 379,911.84, 569,868.82 and 155,272.31 is: 232,908.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,911.84 : 569,868.82 = 155,272.31 : x
  2. Step 2: Convert to fraction form
    379,911.84/569,868.82 = 155,272.31/x
  3. Step 3: Cross multiply
    379,911.84x = 569,868.82 × 155,272.31
  4. Step 4: Simplify right side
    379,911.84x = 88,484,846,977.86
  5. Step 5: Solve for x
    x = 88,484,846,977.86/379,911.84
  6. Step 6: Final answer
    x = 232,908.90

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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.