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Finding the Fourth Proportional to 442,415.08, 610,515.22 and 261,185.39

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Solution

The fourth proportional to 442,415.08, 610,515.22 and 261,185.39 is: 360,425.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,415.08 : 610,515.22 = 261,185.39 : x
  2. Step 2: Convert to fraction form
    442,415.08/610,515.22 = 261,185.39/x
  3. Step 3: Cross multiply
    442,415.08x = 610,515.22 × 261,185.39
  4. Step 4: Simplify right side
    442,415.08x = 159,457,652,784.06
  5. Step 5: Solve for x
    x = 159,457,652,784.06/442,415.08
  6. Step 6: Final answer
    x = 360,425.45

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1.5x scale

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.