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Finding the Fourth Proportional to 379,669.95, 569,509.97 and 113,369.31

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Solution

The fourth proportional to 379,669.95, 569,509.97 and 113,369.31 is: 170,055.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,669.95 : 569,509.97 = 113,369.31 : x
  2. Step 2: Convert to fraction form
    379,669.95/569,509.97 = 113,369.31/x
  3. Step 3: Cross multiply
    379,669.95x = 569,509.97 × 113,369.31
  4. Step 4: Simplify right side
    379,669.95x = 64,564,951,770.17
  5. Step 5: Solve for x
    x = 64,564,951,770.17/379,669.95
  6. Step 6: Final answer
    x = 170,055.47

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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.