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Finding the Fourth Proportional to 645,871.96, 968,813.34 and 225,147.16

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Solution

The fourth proportional to 645,871.96, 968,813.34 and 225,147.16 is: 337,722.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,871.96 : 968,813.34 = 225,147.16 : x
  2. Step 2: Convert to fraction form
    645,871.96/968,813.34 = 225,147.16/x
  3. Step 3: Cross multiply
    645,871.96x = 968,813.34 × 225,147.16
  4. Step 4: Simplify right side
    645,871.96x = 218,125,572,071.11
  5. Step 5: Solve for x
    x = 218,125,572,071.11/645,871.96
  6. Step 6: Final answer
    x = 337,722.62

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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.