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Finding the Fourth Proportional to 636,840.99, 955,271.22 and 163,515.87

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Solution

The fourth proportional to 636,840.99, 955,271.22 and 163,515.87 is: 245,276.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,840.99 : 955,271.22 = 163,515.87 : x
  2. Step 2: Convert to fraction form
    636,840.99/955,271.22 = 163,515.87/x
  3. Step 3: Cross multiply
    636,840.99x = 955,271.22 × 163,515.87
  4. Step 4: Simplify right side
    636,840.99x = 156,202,004,624.26
  5. Step 5: Solve for x
    x = 156,202,004,624.26/636,840.99
  6. Step 6: Final answer
    x = 245,276.30

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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.