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Finding the Fourth Proportional to 617,116.80, 925,493.76 and 262,128

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Solution

The fourth proportional to 617,116.80, 925,493.76 and 262,128 is: 393,114.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,116.80 : 925,493.76 = 262,128 : x
  2. Step 2: Convert to fraction form
    617,116.80/925,493.76 = 262,128/x
  3. Step 3: Cross multiply
    617,116.80x = 925,493.76 × 262,128
  4. Step 4: Simplify right side
    617,116.80x = 242,597,828,321.28
  5. Step 5: Solve for x
    x = 242,597,828,321.28/617,116.80
  6. Step 6: Final answer
    x = 393,114.93

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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.