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Finding the Fourth Proportional to 218,230.56, 301,123.46 and 122,718.80

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Solution

The fourth proportional to 218,230.56, 301,123.46 and 122,718.80 is: 169,332.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,230.56 : 301,123.46 = 122,718.80 : x
  2. Step 2: Convert to fraction form
    218,230.56/301,123.46 = 122,718.80/x
  3. Step 3: Cross multiply
    218,230.56x = 301,123.46 × 122,718.80
  4. Step 4: Simplify right side
    218,230.56x = 36,953,507,543.84
  5. Step 5: Solve for x
    x = 36,953,507,543.84/218,230.56
  6. Step 6: Final answer
    x = 169,332.41

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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.