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Finding the Fourth Proportional to 218,290.76, 301,240.78 and 122,797.45

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Solution

The fourth proportional to 218,290.76, 301,240.78 and 122,797.45 is: 169,460.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,290.76 : 301,240.78 = 122,797.45 : x
  2. Step 2: Convert to fraction form
    218,290.76/301,240.78 = 122,797.45/x
  3. Step 3: Cross multiply
    218,290.76x = 301,240.78 × 122,797.45
  4. Step 4: Simplify right side
    218,290.76x = 36,991,599,689.57
  5. Step 5: Solve for x
    x = 36,991,599,689.57/218,290.76
  6. Step 6: Final answer
    x = 169,460.22

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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.