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Finding the Fourth Proportional to 218,555.54, 301,612.17 and 123,065.45

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Solution

The fourth proportional to 218,555.54, 301,612.17 and 123,065.45 is: 169,833.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,555.54 : 301,612.17 = 123,065.45 : x
  2. Step 2: Convert to fraction form
    218,555.54/301,612.17 = 123,065.45/x
  3. Step 3: Cross multiply
    218,555.54x = 301,612.17 × 123,065.45
  4. Step 4: Simplify right side
    218,555.54x = 37,118,035,918.47
  5. Step 5: Solve for x
    x = 37,118,035,918.47/218,555.54
  6. Step 6: Final answer
    x = 169,833.43

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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.