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Finding the Fourth Proportional to 289,781.50, 434,712.81 and 273,845.50

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Solution

The fourth proportional to 289,781.50, 434,712.81 and 273,845.50 is: 410,806.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,781.50 : 434,712.81 = 273,845.50 : x
  2. Step 2: Convert to fraction form
    289,781.50/434,712.81 = 273,845.50/x
  3. Step 3: Cross multiply
    289,781.50x = 434,712.81 × 273,845.50
  4. Step 4: Simplify right side
    289,781.50x = 119,044,146,810.86
  5. Step 5: Solve for x
    x = 119,044,146,810.86/289,781.50
  6. Step 6: Final answer
    x = 410,806.58

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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.