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Finding the Fourth Proportional to 379,645.38, 569,252.41 and 154,742.40

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Solution

The fourth proportional to 379,645.38, 569,252.41 and 154,742.40 is: 232,025.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,645.38 : 569,252.41 = 154,742.40 : x
  2. Step 2: Convert to fraction form
    379,645.38/569,252.41 = 154,742.40/x
  3. Step 3: Cross multiply
    379,645.38x = 569,252.41 × 154,742.40
  4. Step 4: Simplify right side
    379,645.38x = 88,087,483,742.33
  5. Step 5: Solve for x
    x = 88,087,483,742.33/379,645.38
  6. Step 6: Final answer
    x = 232,025.70

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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.