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Finding the Fourth Proportional to 433,986.80, 650,980.20 and 118,475.60

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Solution

The fourth proportional to 433,986.80, 650,980.20 and 118,475.60 is: 177,713.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    433,986.80 : 650,980.20 = 118,475.60 : x
  2. Step 2: Convert to fraction form
    433,986.80/650,980.20 = 118,475.60/x
  3. Step 3: Cross multiply
    433,986.80x = 650,980.20 × 118,475.60
  4. Step 4: Simplify right side
    433,986.80x = 77,125,269,783.12
  5. Step 5: Solve for x
    x = 77,125,269,783.12/433,986.80
  6. Step 6: Final answer
    x = 177,713.40

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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.