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Finding the Fourth Proportional to 285,304.56, 393,301.08 and 217,203

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Solution

The fourth proportional to 285,304.56, 393,301.08 and 217,203 is: 299,420.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,304.56 : 393,301.08 = 217,203 : x
  2. Step 2: Convert to fraction form
    285,304.56/393,301.08 = 217,203/x
  3. Step 3: Cross multiply
    285,304.56x = 393,301.08 × 217,203
  4. Step 4: Simplify right side
    285,304.56x = 85,426,174,479.24
  5. Step 5: Solve for x
    x = 85,426,174,479.24/285,304.56
  6. Step 6: Final answer
    x = 299,420.99

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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.