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Finding the Fourth Proportional to 217,667.70, 326,501.55 and 201,921.30

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Solution

The fourth proportional to 217,667.70, 326,501.55 and 201,921.30 is: 302,881.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,667.70 : 326,501.55 = 201,921.30 : x
  2. Step 2: Convert to fraction form
    217,667.70/326,501.55 = 201,921.30/x
  3. Step 3: Cross multiply
    217,667.70x = 326,501.55 × 201,921.30
  4. Step 4: Simplify right side
    217,667.70x = 65,927,617,428.02
  5. Step 5: Solve for x
    x = 65,927,617,428.02/217,667.70
  6. Step 6: Final answer
    x = 302,881.95

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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.