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Finding the Fourth Proportional to 376,088.70, 564,216.11 and 139,431.39

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Solution

The fourth proportional to 376,088.70, 564,216.11 and 139,431.39 is: 209,177.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,088.70 : 564,216.11 = 139,431.39 : x
  2. Step 2: Convert to fraction form
    376,088.70/564,216.11 = 139,431.39/x
  3. Step 3: Cross multiply
    376,088.70x = 564,216.11 × 139,431.39
  4. Step 4: Simplify right side
    376,088.70x = 78,669,432,959.46
  5. Step 5: Solve for x
    x = 78,669,432,959.46/376,088.70
  6. Step 6: Final answer
    x = 209,177.87

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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.