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Finding the Fourth Proportional to 218,316.80, 301,260.53 and 122,805.05

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Solution

The fourth proportional to 218,316.80, 301,260.53 and 122,805.05 is: 169,461.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,316.80 : 301,260.53 = 122,805.05 : x
  2. Step 2: Convert to fraction form
    218,316.80/301,260.53 = 122,805.05/x
  3. Step 3: Cross multiply
    218,316.80x = 301,260.53 × 122,805.05
  4. Step 4: Simplify right side
    218,316.80x = 36,996,313,250.39
  5. Step 5: Solve for x
    x = 36,996,313,250.39/218,316.80
  6. Step 6: Final answer
    x = 169,461.59

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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.