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Finding the Fourth Proportional to 243,639.48, 365,511.37 and 72,874.59

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Solution

The fourth proportional to 243,639.48, 365,511.37 and 72,874.59 is: 109,327.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,639.48 : 365,511.37 = 72,874.59 : x
  2. Step 2: Convert to fraction form
    243,639.48/365,511.37 = 72,874.59/x
  3. Step 3: Cross multiply
    243,639.48x = 365,511.37 × 72,874.59
  4. Step 4: Simplify right side
    243,639.48x = 26,636,489,812.87
  5. Step 5: Solve for x
    x = 26,636,489,812.87/243,639.48
  6. Step 6: Final answer
    x = 109,327.48

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1.5x scale

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.