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Finding the Fourth Proportional to 529,676.67, 730,938.54 and 300,255.15

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Solution

The fourth proportional to 529,676.67, 730,938.54 and 300,255.15 is: 414,343.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,676.67 : 730,938.54 = 300,255.15 : x
  2. Step 2: Convert to fraction form
    529,676.67/730,938.54 = 300,255.15/x
  3. Step 3: Cross multiply
    529,676.67x = 730,938.54 × 300,255.15
  4. Step 4: Simplify right side
    529,676.67x = 219,468,060,968.48
  5. Step 5: Solve for x
    x = 219,468,060,968.48/529,676.67
  6. Step 6: Final answer
    x = 414,343.45

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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.