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Finding the Fourth Proportional to 490,693.60, 736,040.40 and 266,161.60

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Solution

The fourth proportional to 490,693.60, 736,040.40 and 266,161.60 is: 399,242.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,693.60 : 736,040.40 = 266,161.60 : x
  2. Step 2: Convert to fraction form
    490,693.60/736,040.40 = 266,161.60/x
  3. Step 3: Cross multiply
    490,693.60x = 736,040.40 × 266,161.60
  4. Step 4: Simplify right side
    490,693.60x = 195,905,690,528.64
  5. Step 5: Solve for x
    x = 195,905,690,528.64/490,693.60
  6. Step 6: Final answer
    x = 399,242.40

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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.