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Finding the Fourth Proportional to 617,954.40, 926,931.60 and 219,045.60

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Solution

The fourth proportional to 617,954.40, 926,931.60 and 219,045.60 is: 328,568.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,954.40 : 926,931.60 = 219,045.60 : x
  2. Step 2: Convert to fraction form
    617,954.40/926,931.60 = 219,045.60/x
  3. Step 3: Cross multiply
    617,954.40x = 926,931.60 × 219,045.60
  4. Step 4: Simplify right side
    617,954.40x = 203,040,288,480.96
  5. Step 5: Solve for x
    x = 203,040,288,480.96/617,954.40
  6. Step 6: Final answer
    x = 328,568.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.