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Finding the Fourth Proportional to 376,091.10, 564,219.70 and 139,433.78

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Solution

The fourth proportional to 376,091.10, 564,219.70 and 139,433.78 is: 209,181.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,091.10 : 564,219.70 = 139,433.78 : x
  2. Step 2: Convert to fraction form
    376,091.10/564,219.70 = 139,433.78/x
  3. Step 3: Cross multiply
    376,091.10x = 564,219.70 × 139,433.78
  4. Step 4: Simplify right side
    376,091.10x = 78,671,285,521.47
  5. Step 5: Solve for x
    x = 78,671,285,521.47/376,091.10
  6. Step 6: Final answer
    x = 209,181.46

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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.