Home / 278,279.06-384,025.22-157,417.76

Finding the Fourth Proportional to 278,279.06, 384,025.22 and 157,417.76

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Solution

The fourth proportional to 278,279.06, 384,025.22 and 157,417.76 is: 217,236.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,279.06 : 384,025.22 = 157,417.76 : x
  2. Step 2: Convert to fraction form
    278,279.06/384,025.22 = 157,417.76/x
  3. Step 3: Cross multiply
    278,279.06x = 384,025.22 × 157,417.76
  4. Step 4: Simplify right side
    278,279.06x = 60,452,387,208.69
  5. Step 5: Solve for x
    x = 60,452,387,208.69/278,279.06
  6. Step 6: Final answer
    x = 217,236.57

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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.