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Finding the Fourth Proportional to 177,813.60, 266,928.78 and 140,398.90

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Solution

The fourth proportional to 177,813.60, 266,928.78 and 140,398.90 is: 210,762.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,813.60 : 266,928.78 = 140,398.90 : x
  2. Step 2: Convert to fraction form
    177,813.60/266,928.78 = 140,398.90/x
  3. Step 3: Cross multiply
    177,813.60x = 266,928.78 × 140,398.90
  4. Step 4: Simplify right side
    177,813.60x = 37,476,507,090.34
  5. Step 5: Solve for x
    x = 37,476,507,090.34/177,813.60
  6. Step 6: Final answer
    x = 210,762.88

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1.5x scale

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.