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Finding the Fourth Proportional to 331,327.40, 457,235.70 and 180,424.40

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Solution

The fourth proportional to 331,327.40, 457,235.70 and 180,424.40 is: 248,987.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,327.40 : 457,235.70 = 180,424.40 : x
  2. Step 2: Convert to fraction form
    331,327.40/457,235.70 = 180,424.40/x
  3. Step 3: Cross multiply
    331,327.40x = 457,235.70 × 180,424.40
  4. Step 4: Simplify right side
    331,327.40x = 82,496,476,831.08
  5. Step 5: Solve for x
    x = 82,496,476,831.08/331,327.40
  6. Step 6: Final answer
    x = 248,987.79

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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.