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Finding the Fourth Proportional to 218,213.89, 301,130.41 and 126,337.05

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Solution

The fourth proportional to 218,213.89, 301,130.41 and 126,337.05 is: 174,342.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,213.89 : 301,130.41 = 126,337.05 : x
  2. Step 2: Convert to fraction form
    218,213.89/301,130.41 = 126,337.05/x
  3. Step 3: Cross multiply
    218,213.89x = 301,130.41 × 126,337.05
  4. Step 4: Simplify right side
    218,213.89x = 38,043,927,664.69
  5. Step 5: Solve for x
    x = 38,043,927,664.69/218,213.89
  6. Step 6: Final answer
    x = 174,342.37

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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.