Home / 278,501.78-384,532.18-171,215.66

Finding the Fourth Proportional to 278,501.78, 384,532.18 and 171,215.66

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Solution

The fourth proportional to 278,501.78, 384,532.18 and 171,215.66 is: 236,400.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,501.78 : 384,532.18 = 171,215.66 : x
  2. Step 2: Convert to fraction form
    278,501.78/384,532.18 = 171,215.66/x
  3. Step 3: Cross multiply
    278,501.78x = 384,532.18 × 171,215.66
  4. Step 4: Simplify right side
    278,501.78x = 65,837,930,989.94
  5. Step 5: Solve for x
    x = 65,837,930,989.94/278,501.78
  6. Step 6: Final answer
    x = 236,400.40

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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.