Home / 621,098.18-931,844.10-221,730.14

Finding the Fourth Proportional to 621,098.18, 931,844.10 and 221,730.14

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Solution

The fourth proportional to 621,098.18, 931,844.10 and 221,730.14 is: 332,665.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,098.18 : 931,844.10 = 221,730.14 : x
  2. Step 2: Convert to fraction form
    621,098.18/931,844.10 = 221,730.14/x
  3. Step 3: Cross multiply
    621,098.18x = 931,844.10 × 221,730.14
  4. Step 4: Simplify right side
    621,098.18x = 206,617,922,751.17
  5. Step 5: Solve for x
    x = 206,617,922,751.17/621,098.18
  6. Step 6: Final answer
    x = 332,665.48

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Double scale
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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.