Home / 206,918.22-310,328.13-57,155.21

Finding the Fourth Proportional to 206,918.22, 310,328.13 and 57,155.21

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Solution

The fourth proportional to 206,918.22, 310,328.13 and 57,155.21 is: 85,719.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,918.22 : 310,328.13 = 57,155.21 : x
  2. Step 2: Convert to fraction form
    206,918.22/310,328.13 = 57,155.21/x
  3. Step 3: Cross multiply
    206,918.22x = 310,328.13 × 57,155.21
  4. Step 4: Simplify right side
    206,918.22x = 17,736,867,887.42
  5. Step 5: Solve for x
    x = 17,736,867,887.42/206,918.22
  6. Step 6: Final answer
    x = 85,719.22

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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.