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Finding the Fourth Proportional to 218,408.07, 301,402.51 and 122,914.76

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Solution

The fourth proportional to 218,408.07, 301,402.51 and 122,914.76 is: 169,622.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,408.07 : 301,402.51 = 122,914.76 : x
  2. Step 2: Convert to fraction form
    218,408.07/301,402.51 = 122,914.76/x
  3. Step 3: Cross multiply
    218,408.07x = 301,402.51 × 122,914.76
  4. Step 4: Simplify right side
    218,408.07x = 37,046,818,240.84
  5. Step 5: Solve for x
    x = 37,046,818,240.84/218,408.07
  6. Step 6: Final answer
    x = 169,622.02

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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.