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Finding the Fourth Proportional to 400,951.40, 553,313.40 and 217,190.34

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Solution

The fourth proportional to 400,951.40, 553,313.40 and 217,190.34 is: 299,722.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,951.40 : 553,313.40 = 217,190.34 : x
  2. Step 2: Convert to fraction form
    400,951.40/553,313.40 = 217,190.34/x
  3. Step 3: Cross multiply
    400,951.40x = 553,313.40 × 217,190.34
  4. Step 4: Simplify right side
    400,951.40x = 120,174,325,472.56
  5. Step 5: Solve for x
    x = 120,174,325,472.56/400,951.40
  6. Step 6: Final answer
    x = 299,722.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.