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Finding the Fourth Proportional to 376,856.30, 520,065.78 and 207,090.42

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Solution

The fourth proportional to 376,856.30, 520,065.78 and 207,090.42 is: 285,787.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,856.30 : 520,065.78 = 207,090.42 : x
  2. Step 2: Convert to fraction form
    376,856.30/520,065.78 = 207,090.42/x
  3. Step 3: Cross multiply
    376,856.30x = 520,065.78 × 207,090.42
  4. Step 4: Simplify right side
    376,856.30x = 107,700,640,807.83
  5. Step 5: Solve for x
    x = 107,700,640,807.83/376,856.30
  6. Step 6: Final answer
    x = 285,787.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.