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Finding the Fourth Proportional to 620,667.48, 930,975.88 and 215,952.32

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Solution

The fourth proportional to 620,667.48, 930,975.88 and 215,952.32 is: 323,919.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,667.48 : 930,975.88 = 215,952.32 : x
  2. Step 2: Convert to fraction form
    620,667.48/930,975.88 = 215,952.32/x
  3. Step 3: Cross multiply
    620,667.48x = 930,975.88 × 215,952.32
  4. Step 4: Simplify right side
    620,667.48x = 201,046,401,150.04
  5. Step 5: Solve for x
    x = 201,046,401,150.04/620,667.48
  6. Step 6: Final answer
    x = 323,919.66

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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.