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Finding the Fourth Proportional to 218,000.70, 300,848.58 and 122,505.48

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Solution

The fourth proportional to 218,000.70, 300,848.58 and 122,505.48 is: 169,061.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,000.70 : 300,848.58 = 122,505.48 : x
  2. Step 2: Convert to fraction form
    218,000.70/300,848.58 = 122,505.48/x
  3. Step 3: Cross multiply
    218,000.70x = 300,848.58 × 122,505.48
  4. Step 4: Simplify right side
    218,000.70x = 36,855,599,700.22
  5. Step 5: Solve for x
    x = 36,855,599,700.22/218,000.70
  6. Step 6: Final answer
    x = 169,061.84

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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.