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Finding the Fourth Proportional to 331,496.73, 457,345.54 and 216,840.76

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Solution

The fourth proportional to 331,496.73, 457,345.54 and 216,840.76 is: 299,161.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,496.73 : 457,345.54 = 216,840.76 : x
  2. Step 2: Convert to fraction form
    331,496.73/457,345.54 = 216,840.76/x
  3. Step 3: Cross multiply
    331,496.73x = 457,345.54 × 216,840.76
  4. Step 4: Simplify right side
    331,496.73x = 99,171,154,476.21
  5. Step 5: Solve for x
    x = 99,171,154,476.21/331,496.73
  6. Step 6: Final answer
    x = 299,161.79

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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.