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Finding the Fourth Proportional to 666,065.00, 919,167.72 and 360,139.20

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Solution

The fourth proportional to 666,065.00, 919,167.72 and 360,139.20 is: 496,991.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,065.00 : 919,167.72 = 360,139.20 : x
  2. Step 2: Convert to fraction form
    666,065.00/919,167.72 = 360,139.20/x
  3. Step 3: Cross multiply
    666,065.00x = 919,167.72 × 360,139.20
  4. Step 4: Simplify right side
    666,065.00x = 331,028,327,346.62
  5. Step 5: Solve for x
    x = 331,028,327,346.62/666,065.00
  6. Step 6: Final answer
    x = 496,991.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.