Home / 278,520.08-384,357.28-151,195.72

Finding the Fourth Proportional to 278,520.08, 384,357.28 and 151,195.72

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Solution

The fourth proportional to 278,520.08, 384,357.28 and 151,195.72 is: 208,649.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,520.08 : 384,357.28 = 151,195.72 : x
  2. Step 2: Convert to fraction form
    278,520.08/384,357.28 = 151,195.72/x
  3. Step 3: Cross multiply
    278,520.08x = 384,357.28 × 151,195.72
  4. Step 4: Simplify right side
    278,520.08x = 58,113,175,686.84
  5. Step 5: Solve for x
    x = 58,113,175,686.84/278,520.08
  6. Step 6: Final answer
    x = 208,649.86

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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.