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Finding the Fourth Proportional to 266,089.20, 399,133.80 and 166,880.40

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Solution

The fourth proportional to 266,089.20, 399,133.80 and 166,880.40 is: 250,320.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,089.20 : 399,133.80 = 166,880.40 : x
  2. Step 2: Convert to fraction form
    266,089.20/399,133.80 = 166,880.40/x
  3. Step 3: Cross multiply
    266,089.20x = 399,133.80 × 166,880.40
  4. Step 4: Simplify right side
    266,089.20x = 66,607,608,197.52
  5. Step 5: Solve for x
    x = 66,607,608,197.52/266,089.20
  6. Step 6: Final answer
    x = 250,320.60

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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.