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Finding the Fourth Proportional to 379,859.88, 569,579.42 and 155,377.92

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Solution

The fourth proportional to 379,859.88, 569,579.42 and 155,377.92 is: 232,980.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,859.88 : 569,579.42 = 155,377.92 : x
  2. Step 2: Convert to fraction form
    379,859.88/569,579.42 = 155,377.92/x
  3. Step 3: Cross multiply
    379,859.88x = 569,579.42 × 155,377.92
  4. Step 4: Simplify right side
    379,859.88x = 88,500,065,554.41
  5. Step 5: Solve for x
    x = 88,500,065,554.41/379,859.88
  6. Step 6: Final answer
    x = 232,980.82

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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.