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Finding the Fourth Proportional to 376,870.18, 520,109.85 and 215,775.94

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Solution

The fourth proportional to 376,870.18, 520,109.85 and 215,775.94 is: 297,787.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,870.18 : 520,109.85 = 215,775.94 : x
  2. Step 2: Convert to fraction form
    376,870.18/520,109.85 = 215,775.94/x
  3. Step 3: Cross multiply
    376,870.18x = 520,109.85 × 215,775.94
  4. Step 4: Simplify right side
    376,870.18x = 112,227,191,787.01
  5. Step 5: Solve for x
    x = 112,227,191,787.01/376,870.18
  6. Step 6: Final answer
    x = 297,787.40

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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.