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Finding the Fourth Proportional to 379,884.24, 569,956.41 and 143,294.58

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Solution

The fourth proportional to 379,884.24, 569,956.41 and 143,294.58 is: 214,990.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,884.24 : 569,956.41 = 143,294.58 : x
  2. Step 2: Convert to fraction form
    379,884.24/569,956.41 = 143,294.58/x
  3. Step 3: Cross multiply
    379,884.24x = 569,956.41 × 143,294.58
  4. Step 4: Simplify right side
    379,884.24x = 81,671,664,389.26
  5. Step 5: Solve for x
    x = 81,671,664,389.26/379,884.24
  6. Step 6: Final answer
    x = 214,990.93

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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.