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Finding the Fourth Proportional to 445,855.83, 668,643.26 and 146,266.59

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Solution

The fourth proportional to 445,855.83, 668,643.26 and 146,266.59 is: 219,353.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,855.83 : 668,643.26 = 146,266.59 : x
  2. Step 2: Convert to fraction form
    445,855.83/668,643.26 = 146,266.59/x
  3. Step 3: Cross multiply
    445,855.83x = 668,643.26 × 146,266.59
  4. Step 4: Simplify right side
    445,855.83x = 97,800,169,932.35
  5. Step 5: Solve for x
    x = 97,800,169,932.35/445,855.83
  6. Step 6: Final answer
    x = 219,353.80

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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.