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Finding the Fourth Proportional to 217,221.30, 325,831.95 and 201,474.90

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Solution

The fourth proportional to 217,221.30, 325,831.95 and 201,474.90 is: 302,212.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,221.30 : 325,831.95 = 201,474.90 : x
  2. Step 2: Convert to fraction form
    217,221.30/325,831.95 = 201,474.90/x
  3. Step 3: Cross multiply
    217,221.30x = 325,831.95 × 201,474.90
  4. Step 4: Simplify right side
    217,221.30x = 65,646,959,543.06
  5. Step 5: Solve for x
    x = 65,646,959,543.06/217,221.30
  6. Step 6: Final answer
    x = 302,212.35

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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.