Home / 515,025.14-772,521.30-135,934.20

Finding the Fourth Proportional to 515,025.14, 772,521.30 and 135,934.20

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Solution

The fourth proportional to 515,025.14, 772,521.30 and 135,934.20 is: 203,896.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,025.14 : 772,521.30 = 135,934.20 : x
  2. Step 2: Convert to fraction form
    515,025.14/772,521.30 = 135,934.20/x
  3. Step 3: Cross multiply
    515,025.14x = 772,521.30 × 135,934.20
  4. Step 4: Simplify right side
    515,025.14x = 105,012,064,898.46
  5. Step 5: Solve for x
    x = 105,012,064,898.46/515,025.14
  6. Step 6: Final answer
    x = 203,896.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.