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Finding the Fourth Proportional to 343,553.10, 515,329.65 and 144,098.70

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Solution

The fourth proportional to 343,553.10, 515,329.65 and 144,098.70 is: 216,148.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,553.10 : 515,329.65 = 144,098.70 : x
  2. Step 2: Convert to fraction form
    343,553.10/515,329.65 = 144,098.70/x
  3. Step 3: Cross multiply
    343,553.10x = 515,329.65 × 144,098.70
  4. Step 4: Simplify right side
    343,553.10x = 74,258,332,636.46
  5. Step 5: Solve for x
    x = 74,258,332,636.46/343,553.10
  6. Step 6: Final answer
    x = 216,148.05

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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.