Home / 278,545.91-384,393.20-151,221.60

Finding the Fourth Proportional to 278,545.91, 384,393.20 and 151,221.60

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Solution

The fourth proportional to 278,545.91, 384,393.20 and 151,221.60 is: 208,685.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,545.91 : 384,393.20 = 151,221.60 : x
  2. Step 2: Convert to fraction form
    278,545.91/384,393.20 = 151,221.60/x
  3. Step 3: Cross multiply
    278,545.91x = 384,393.20 × 151,221.60
  4. Step 4: Simplify right side
    278,545.91x = 58,128,553,977.01
  5. Step 5: Solve for x
    x = 58,128,553,977.01/278,545.91
  6. Step 6: Final answer
    x = 208,685.72

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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.