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Finding the Fourth Proportional to 368,376.42, 508,388.98 and 207,221.85

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Solution

The fourth proportional to 368,376.42, 508,388.98 and 207,221.85 is: 285,982.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,376.42 : 508,388.98 = 207,221.85 : x
  2. Step 2: Convert to fraction form
    368,376.42/508,388.98 = 207,221.85/x
  3. Step 3: Cross multiply
    368,376.42x = 508,388.98 × 207,221.85
  4. Step 4: Simplify right side
    368,376.42x = 105,349,304,955.21
  5. Step 5: Solve for x
    x = 105,349,304,955.21/368,376.42
  6. Step 6: Final answer
    x = 285,982.76

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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.