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Finding the Fourth Proportional to 369,748.70, 554,684.38 and 129,800.39

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Solution

The fourth proportional to 369,748.70, 554,684.38 and 129,800.39 is: 194,722.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,748.70 : 554,684.38 = 129,800.39 : x
  2. Step 2: Convert to fraction form
    369,748.70/554,684.38 = 129,800.39/x
  3. Step 3: Cross multiply
    369,748.70x = 554,684.38 × 129,800.39
  4. Step 4: Simplify right side
    369,748.70x = 71,998,249,913.12
  5. Step 5: Solve for x
    x = 71,998,249,913.12/369,748.70
  6. Step 6: Final answer
    x = 194,722.12

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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.