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Finding the Fourth Proportional to 529,670.64, 731,012.76 and 300,265.28

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Solution

The fourth proportional to 529,670.64, 731,012.76 and 300,265.28 is: 414,404.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,670.64 : 731,012.76 = 300,265.28 : x
  2. Step 2: Convert to fraction form
    529,670.64/731,012.76 = 300,265.28/x
  3. Step 3: Cross multiply
    529,670.64x = 731,012.76 × 300,265.28
  4. Step 4: Simplify right side
    529,670.64x = 219,497,751,064.97
  5. Step 5: Solve for x
    x = 219,497,751,064.97/529,670.64
  6. Step 6: Final answer
    x = 414,404.22

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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.