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Finding the Fourth Proportional to 218,612.25, 301,816.13 and 143,291.97

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Solution

The fourth proportional to 218,612.25, 301,816.13 and 143,291.97 is: 197,828.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,612.25 : 301,816.13 = 143,291.97 : x
  2. Step 2: Convert to fraction form
    218,612.25/301,816.13 = 143,291.97/x
  3. Step 3: Cross multiply
    218,612.25x = 301,816.13 × 143,291.97
  4. Step 4: Simplify right side
    218,612.25x = 43,247,827,129.02
  5. Step 5: Solve for x
    x = 43,247,827,129.02/218,612.25
  6. Step 6: Final answer
    x = 197,828.93

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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.