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Finding the Fourth Proportional to 376,842.51, 520,065.92 and 215,693.87

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Solution

The fourth proportional to 376,842.51, 520,065.92 and 215,693.87 is: 297,670.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,842.51 : 520,065.92 = 215,693.87 : x
  2. Step 2: Convert to fraction form
    376,842.51/520,065.92 = 215,693.87/x
  3. Step 3: Cross multiply
    376,842.51x = 520,065.92 × 215,693.87
  4. Step 4: Simplify right side
    376,842.51x = 112,175,030,590.91
  5. Step 5: Solve for x
    x = 112,175,030,590.91/376,842.51
  6. Step 6: Final answer
    x = 297,670.85

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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.