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Finding the Fourth Proportional to 376,988.16, 520,237.82 and 207,218.64

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Solution

The fourth proportional to 376,988.16, 520,237.82 and 207,218.64 is: 285,958.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,988.16 : 520,237.82 = 207,218.64 : x
  2. Step 2: Convert to fraction form
    376,988.16/520,237.82 = 207,218.64/x
  3. Step 3: Cross multiply
    376,988.16x = 520,237.82 × 207,218.64
  4. Step 4: Simplify right side
    376,988.16x = 107,802,973,536.97
  5. Step 5: Solve for x
    x = 107,802,973,536.97/376,988.16
  6. Step 6: Final answer
    x = 285,958.51

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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.