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Finding the Fourth Proportional to 266,491.20, 399,080.70 and 177,261.60

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Solution

The fourth proportional to 266,491.20, 399,080.70 and 177,261.60 is: 265,455.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,491.20 : 399,080.70 = 177,261.60 : x
  2. Step 2: Convert to fraction form
    266,491.20/399,080.70 = 177,261.60/x
  3. Step 3: Cross multiply
    266,491.20x = 399,080.70 × 177,261.60
  4. Step 4: Simplify right side
    266,491.20x = 70,741,683,411.12
  5. Step 5: Solve for x
    x = 70,741,683,411.12/266,491.20
  6. Step 6: Final answer
    x = 265,455.98

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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.