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Finding the Fourth Proportional to 543,039.50, 749,483.88 and 301,399.86

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Solution

The fourth proportional to 543,039.50, 749,483.88 and 301,399.86 is: 415,981.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,039.50 : 749,483.88 = 301,399.86 : x
  2. Step 2: Convert to fraction form
    543,039.50/749,483.88 = 301,399.86/x
  3. Step 3: Cross multiply
    543,039.50x = 749,483.88 × 301,399.86
  4. Step 4: Simplify right side
    543,039.50x = 225,894,336,504.26
  5. Step 5: Solve for x
    x = 225,894,336,504.26/543,039.50
  6. Step 6: Final answer
    x = 415,981.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.