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Finding the Fourth Proportional to 517,840.88, 776,771.04 and 143,873.60

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Solution

The fourth proportional to 517,840.88, 776,771.04 and 143,873.60 is: 215,813.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,840.88 : 776,771.04 = 143,873.60 : x
  2. Step 2: Convert to fraction form
    517,840.88/776,771.04 = 143,873.60/x
  3. Step 3: Cross multiply
    517,840.88x = 776,771.04 × 143,873.60
  4. Step 4: Simplify right side
    517,840.88x = 111,756,842,016.69
  5. Step 5: Solve for x
    x = 111,756,842,016.69/517,840.88
  6. Step 6: Final answer
    x = 215,813.10

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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.