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Finding the Fourth Proportional to 218,508.17, 301,546.91 and 123,018.28

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Solution

The fourth proportional to 218,508.17, 301,546.91 and 123,018.28 is: 169,768.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,508.17 : 301,546.91 = 123,018.28 : x
  2. Step 2: Convert to fraction form
    218,508.17/301,546.91 = 123,018.28/x
  3. Step 3: Cross multiply
    218,508.17x = 301,546.91 × 123,018.28
  4. Step 4: Simplify right side
    218,508.17x = 37,095,782,207.51
  5. Step 5: Solve for x
    x = 37,095,782,207.51/218,508.17
  6. Step 6: Final answer
    x = 169,768.40

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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.