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Finding the Fourth Proportional to 376,622.70, 564,934.05 and 139,916.40

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Solution

The fourth proportional to 376,622.70, 564,934.05 and 139,916.40 is: 209,874.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,622.70 : 564,934.05 = 139,916.40 : x
  2. Step 2: Convert to fraction form
    376,622.70/564,934.05 = 139,916.40/x
  3. Step 3: Cross multiply
    376,622.70x = 564,934.05 × 139,916.40
  4. Step 4: Simplify right side
    376,622.70x = 79,043,538,513.42
  5. Step 5: Solve for x
    x = 79,043,538,513.42/376,622.70
  6. Step 6: Final answer
    x = 209,874.60

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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.