Home / 278,479.03-384,500.78-171,192.91

Finding the Fourth Proportional to 278,479.03, 384,500.78 and 171,192.91

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Solution

The fourth proportional to 278,479.03, 384,500.78 and 171,192.91 is: 236,368.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,479.03 : 384,500.78 = 171,192.91 : x
  2. Step 2: Convert to fraction form
    278,479.03/384,500.78 = 171,192.91/x
  3. Step 3: Cross multiply
    278,479.03x = 384,500.78 × 171,192.91
  4. Step 4: Simplify right side
    278,479.03x = 65,823,807,425.47
  5. Step 5: Solve for x
    x = 65,823,807,425.47/278,479.03
  6. Step 6: Final answer
    x = 236,368.99

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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.