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Finding the Fourth Proportional to 666,165.15, 999,238.45 and 160,721.89

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Solution

The fourth proportional to 666,165.15, 999,238.45 and 160,721.89 is: 241,080.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,165.15 : 999,238.45 = 160,721.89 : x
  2. Step 2: Convert to fraction form
    666,165.15/999,238.45 = 160,721.89/x
  3. Step 3: Cross multiply
    666,165.15x = 999,238.45 × 160,721.89
  4. Step 4: Simplify right side
    666,165.15x = 160,599,491,697.40
  5. Step 5: Solve for x
    x = 160,599,491,697.40/666,165.15
  6. Step 6: Final answer
    x = 241,080.59

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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.