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Finding the Fourth Proportional to 399,636.54, 598,938.08 and 299,007.20

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Solution

The fourth proportional to 399,636.54, 598,938.08 and 299,007.20 is: 448,124.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,636.54 : 598,938.08 = 299,007.20 : x
  2. Step 2: Convert to fraction form
    399,636.54/598,938.08 = 299,007.20/x
  3. Step 3: Cross multiply
    399,636.54x = 598,938.08 × 299,007.20
  4. Step 4: Simplify right side
    399,636.54x = 179,086,798,274.18
  5. Step 5: Solve for x
    x = 179,086,798,274.18/399,636.54
  6. Step 6: Final answer
    x = 448,124.18

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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.