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Finding the Fourth Proportional to 333,012.72, 459,418.20 and 218,318.88

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Solution

The fourth proportional to 333,012.72, 459,418.20 and 218,318.88 is: 301,188.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    333,012.72 : 459,418.20 = 218,318.88 : x
  2. Step 2: Convert to fraction form
    333,012.72/459,418.20 = 218,318.88/x
  3. Step 3: Cross multiply
    333,012.72x = 459,418.20 × 218,318.88
  4. Step 4: Simplify right side
    333,012.72x = 100,299,666,875.62
  5. Step 5: Solve for x
    x = 100,299,666,875.62/333,012.72
  6. Step 6: Final answer
    x = 301,188.70

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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.