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Finding the Fourth Proportional to 245,487.53, 338,774.81 and 138,056.60

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Solution

The fourth proportional to 245,487.53, 338,774.81 and 138,056.60 is: 190,519.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,487.53 : 338,774.81 = 138,056.60 : x
  2. Step 2: Convert to fraction form
    245,487.53/338,774.81 = 138,056.60/x
  3. Step 3: Cross multiply
    245,487.53x = 338,774.81 × 138,056.60
  4. Step 4: Simplify right side
    245,487.53x = 46,770,096,050.09
  5. Step 5: Solve for x
    x = 46,770,096,050.09/245,487.53
  6. Step 6: Final answer
    x = 190,519.24

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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.