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Finding the Fourth Proportional to 517,041.20, 775,579.08 and 143,032.88

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Solution

The fourth proportional to 517,041.20, 775,579.08 and 143,032.88 is: 214,554.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,041.20 : 775,579.08 = 143,032.88 : x
  2. Step 2: Convert to fraction form
    517,041.20/775,579.08 = 143,032.88/x
  3. Step 3: Cross multiply
    517,041.20x = 775,579.08 × 143,032.88
  4. Step 4: Simplify right side
    517,041.20x = 110,933,309,480.15
  5. Step 5: Solve for x
    x = 110,933,309,480.15/517,041.20
  6. Step 6: Final answer
    x = 214,554.10

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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.