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Finding the Fourth Proportional to 214,918.40, 322,442.40 and 115,126.40

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Solution

The fourth proportional to 214,918.40, 322,442.40 and 115,126.40 is: 172,724.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,918.40 : 322,442.40 = 115,126.40 : x
  2. Step 2: Convert to fraction form
    214,918.40/322,442.40 = 115,126.40/x
  3. Step 3: Cross multiply
    214,918.40x = 322,442.40 × 115,126.40
  4. Step 4: Simplify right side
    214,918.40x = 37,121,632,719.36
  5. Step 5: Solve for x
    x = 37,121,632,719.36/214,918.40
  6. Step 6: Final answer
    x = 172,724.31

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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.