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Finding the Fourth Proportional to 479,851.20, 719,349 and 243,072

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Solution

The fourth proportional to 479,851.20, 719,349 and 243,072 is: 364,391.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,851.20 : 719,349 = 243,072 : x
  2. Step 2: Convert to fraction form
    479,851.20/719,349 = 243,072/x
  3. Step 3: Cross multiply
    479,851.20x = 719,349 × 243,072
  4. Step 4: Simplify right side
    479,851.20x = 174,853,600,128
  5. Step 5: Solve for x
    x = 174,853,600,128/479,851.20
  6. Step 6: Final answer
    x = 364,391.29

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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.