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Finding the Fourth Proportional to 424,691.74, 636,504.18 and 254,039.32

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Solution

The fourth proportional to 424,691.74, 636,504.18 and 254,039.32 is: 380,739.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,691.74 : 636,504.18 = 254,039.32 : x
  2. Step 2: Convert to fraction form
    424,691.74/636,504.18 = 254,039.32/x
  3. Step 3: Cross multiply
    424,691.74x = 636,504.18 × 254,039.32
  4. Step 4: Simplify right side
    424,691.74x = 161,697,089,064.36
  5. Step 5: Solve for x
    x = 161,697,089,064.36/424,691.74
  6. Step 6: Final answer
    x = 380,739.90

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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.