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Finding the Fourth Proportional to 353,550.83, 486,667.85 and 308,149.92

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Solution

The fourth proportional to 353,550.83, 486,667.85 and 308,149.92 is: 424,172.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,550.83 : 486,667.85 = 308,149.92 : x
  2. Step 2: Convert to fraction form
    353,550.83/486,667.85 = 308,149.92/x
  3. Step 3: Cross multiply
    353,550.83x = 486,667.85 × 308,149.92
  4. Step 4: Simplify right side
    353,550.83x = 149,966,657,503.32
  5. Step 5: Solve for x
    x = 149,966,657,503.32/353,550.83
  6. Step 6: Final answer
    x = 424,172.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.