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Finding the Fourth Proportional to 376,420.79, 564,132.80 and 276,111.30

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Solution

The fourth proportional to 376,420.79, 564,132.80 and 276,111.30 is: 413,801.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,420.79 : 564,132.80 = 276,111.30 : x
  2. Step 2: Convert to fraction form
    376,420.79/564,132.80 = 276,111.30/x
  3. Step 3: Cross multiply
    376,420.79x = 564,132.80 × 276,111.30
  4. Step 4: Simplify right side
    376,420.79x = 155,763,439,400.08
  5. Step 5: Solve for x
    x = 155,763,439,400.08/376,420.79
  6. Step 6: Final answer
    x = 413,801.38

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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.