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Finding the Fourth Proportional to 645,168.75, 967,148.61 and 218,406.07

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Solution

The fourth proportional to 645,168.75, 967,148.61 and 218,406.07 is: 327,404.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,168.75 : 967,148.61 = 218,406.07 : x
  2. Step 2: Convert to fraction form
    645,168.75/967,148.61 = 218,406.07/x
  3. Step 3: Cross multiply
    645,168.75x = 967,148.61 × 218,406.07
  4. Step 4: Simplify right side
    645,168.75x = 211,231,127,405.98
  5. Step 5: Solve for x
    x = 211,231,127,405.98/645,168.75
  6. Step 6: Final answer
    x = 327,404.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.