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Finding the Fourth Proportional to 380,663.31, 570,995.40 and 114,423.83

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Solution

The fourth proportional to 380,663.31, 570,995.40 and 114,423.83 is: 171,635.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,663.31 : 570,995.40 = 114,423.83 : x
  2. Step 2: Convert to fraction form
    380,663.31/570,995.40 = 114,423.83/x
  3. Step 3: Cross multiply
    380,663.31x = 570,995.40 × 114,423.83
  4. Step 4: Simplify right side
    380,663.31x = 65,335,477,725.41
  5. Step 5: Solve for x
    x = 65,335,477,725.41/380,663.31
  6. Step 6: Final answer
    x = 171,635.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.