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Finding the Fourth Proportional to 251,847.34, 375,928.40 and 221,954.71

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Solution

The fourth proportional to 251,847.34, 375,928.40 and 221,954.71 is: 331,308.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,847.34 : 375,928.40 = 221,954.71 : x
  2. Step 2: Convert to fraction form
    251,847.34/375,928.40 = 221,954.71/x
  3. Step 3: Cross multiply
    251,847.34x = 375,928.40 × 221,954.71
  4. Step 4: Simplify right side
    251,847.34x = 83,439,079,002.76
  5. Step 5: Solve for x
    x = 83,439,079,002.76/251,847.34
  6. Step 6: Final answer
    x = 331,308.16

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.