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Finding the Fourth Proportional to 399,076.45, 598,613.10 and 118,593.70

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Solution

The fourth proportional to 399,076.45, 598,613.10 and 118,593.70 is: 177,890.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,076.45 : 598,613.10 = 118,593.70 : x
  2. Step 2: Convert to fraction form
    399,076.45/598,613.10 = 118,593.70/x
  3. Step 3: Cross multiply
    399,076.45x = 598,613.10 × 118,593.70
  4. Step 4: Simplify right side
    399,076.45x = 70,991,742,397.47
  5. Step 5: Solve for x
    x = 70,991,742,397.47/399,076.45
  6. Step 6: Final answer
    x = 177,890.08

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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.