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Finding the Fourth Proportional to 379,325.16, 568,910.51 and 139,356.59

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Solution

The fourth proportional to 379,325.16, 568,910.51 and 139,356.59 is: 209,006.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,325.16 : 568,910.51 = 139,356.59 : x
  2. Step 2: Convert to fraction form
    379,325.16/568,910.51 = 139,356.59/x
  3. Step 3: Cross multiply
    379,325.16x = 568,910.51 × 139,356.59
  4. Step 4: Simplify right side
    379,325.16x = 79,281,428,688.76
  5. Step 5: Solve for x
    x = 79,281,428,688.76/379,325.16
  6. Step 6: Final answer
    x = 209,006.51

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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.