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Finding the Fourth Proportional to 543,672, 750,267.36 and 305,208

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Solution

The fourth proportional to 543,672, 750,267.36 and 305,208 is: 421,187.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,672 : 750,267.36 = 305,208 : x
  2. Step 2: Convert to fraction form
    543,672/750,267.36 = 305,208/x
  3. Step 3: Cross multiply
    543,672x = 750,267.36 × 305,208
  4. Step 4: Simplify right side
    543,672x = 228,987,600,410.88
  5. Step 5: Solve for x
    x = 228,987,600,410.88/543,672
  6. Step 6: Final answer
    x = 421,187.04

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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.