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Finding the Fourth Proportional to 388,586.46, 536,189.91 and 218,816.22

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Solution

The fourth proportional to 388,586.46, 536,189.91 and 218,816.22 is: 301,932.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,586.46 : 536,189.91 = 218,816.22 : x
  2. Step 2: Convert to fraction form
    388,586.46/536,189.91 = 218,816.22/x
  3. Step 3: Cross multiply
    388,586.46x = 536,189.91 × 218,816.22
  4. Step 4: Simplify right side
    388,586.46x = 117,327,049,308.34
  5. Step 5: Solve for x
    x = 117,327,049,308.34/388,586.46
  6. Step 6: Final answer
    x = 301,932.93

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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.