Home / 278,550.81-384,423.91-157,713.39

Finding the Fourth Proportional to 278,550.81, 384,423.91 and 157,713.39

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Solution

The fourth proportional to 278,550.81, 384,423.91 and 157,713.39 is: 217,657.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,550.81 : 384,423.91 = 157,713.39 : x
  2. Step 2: Convert to fraction form
    278,550.81/384,423.91 = 157,713.39/x
  3. Step 3: Cross multiply
    278,550.81x = 384,423.91 × 157,713.39
  4. Step 4: Simplify right side
    278,550.81x = 60,628,797,648.87
  5. Step 5: Solve for x
    x = 60,628,797,648.87/278,550.81
  6. Step 6: Final answer
    x = 217,657.95

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1.5x scale

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.