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Finding the Fourth Proportional to 424,346.88, 636,520.32 and 202,056.96

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Solution

The fourth proportional to 424,346.88, 636,520.32 and 202,056.96 is: 303,085.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,346.88 : 636,520.32 = 202,056.96 : x
  2. Step 2: Convert to fraction form
    424,346.88/636,520.32 = 202,056.96/x
  3. Step 3: Cross multiply
    424,346.88x = 636,520.32 × 202,056.96
  4. Step 4: Simplify right side
    424,346.88x = 128,613,360,837.43
  5. Step 5: Solve for x
    x = 128,613,360,837.43/424,346.88
  6. Step 6: Final answer
    x = 303,085.44

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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.