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Finding the Fourth Proportional to 371,515.32, 557,200.44 and 118,728

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Solution

The fourth proportional to 371,515.32, 557,200.44 and 118,728 is: 178,068.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,515.32 : 557,200.44 = 118,728 : x
  2. Step 2: Convert to fraction form
    371,515.32/557,200.44 = 118,728/x
  3. Step 3: Cross multiply
    371,515.32x = 557,200.44 × 118,728
  4. Step 4: Simplify right side
    371,515.32x = 66,155,293,840.32
  5. Step 5: Solve for x
    x = 66,155,293,840.32/371,515.32
  6. Step 6: Final answer
    x = 178,068.82

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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.