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Finding the Fourth Proportional to 400,644.54, 552,868.47 and 219,321.76

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Solution

The fourth proportional to 400,644.54, 552,868.47 and 219,321.76 is: 302,652.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,644.54 : 552,868.47 = 219,321.76 : x
  2. Step 2: Convert to fraction form
    400,644.54/552,868.47 = 219,321.76/x
  3. Step 3: Cross multiply
    400,644.54x = 552,868.47 × 219,321.76
  4. Step 4: Simplify right side
    400,644.54x = 121,256,084,506.74
  5. Step 5: Solve for x
    x = 121,256,084,506.74/400,644.54
  6. Step 6: Final answer
    x = 302,652.53

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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.