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Finding the Fourth Proportional to 424,152.22, 636,236.54 and 339,519.58

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Solution

The fourth proportional to 424,152.22, 636,236.54 and 339,519.58 is: 509,285.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,152.22 : 636,236.54 = 339,519.58 : x
  2. Step 2: Convert to fraction form
    424,152.22/636,236.54 = 339,519.58/x
  3. Step 3: Cross multiply
    424,152.22x = 636,236.54 × 339,519.58
  4. Step 4: Simplify right side
    424,152.22x = 216,014,762,841.45
  5. Step 5: Solve for x
    x = 216,014,762,841.45/424,152.22
  6. Step 6: Final answer
    x = 509,285.94

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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.