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Finding the Fourth Proportional to 366,971.60, 550,457.40 and 266,661.20

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Solution

The fourth proportional to 366,971.60, 550,457.40 and 266,661.20 is: 399,991.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,971.60 : 550,457.40 = 266,661.20 : x
  2. Step 2: Convert to fraction form
    366,971.60/550,457.40 = 266,661.20/x
  3. Step 3: Cross multiply
    366,971.60x = 550,457.40 × 266,661.20
  4. Step 4: Simplify right side
    366,971.60x = 146,785,630,832.88
  5. Step 5: Solve for x
    x = 146,785,630,832.88/366,971.60
  6. Step 6: Final answer
    x = 399,991.80

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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.