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Finding the Fourth Proportional to 207,231.60, 310,890.60 and 118,412.40

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Solution

The fourth proportional to 207,231.60, 310,890.60 and 118,412.40 is: 177,643.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,231.60 : 310,890.60 = 118,412.40 : x
  2. Step 2: Convert to fraction form
    207,231.60/310,890.60 = 118,412.40/x
  3. Step 3: Cross multiply
    207,231.60x = 310,890.60 × 118,412.40
  4. Step 4: Simplify right side
    207,231.60x = 36,813,302,083.44
  5. Step 5: Solve for x
    x = 36,813,302,083.44/207,231.60
  6. Step 6: Final answer
    x = 177,643.28

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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.