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Finding the Fourth Proportional to 190,267.80, 285,415.38 and 65,607

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Solution

The fourth proportional to 190,267.80, 285,415.38 and 65,607 is: 98,415.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,267.80 : 285,415.38 = 65,607 : x
  2. Step 2: Convert to fraction form
    190,267.80/285,415.38 = 65,607/x
  3. Step 3: Cross multiply
    190,267.80x = 285,415.38 × 65,607
  4. Step 4: Simplify right side
    190,267.80x = 18,725,246,835.66
  5. Step 5: Solve for x
    x = 18,725,246,835.66/190,267.80
  6. Step 6: Final answer
    x = 98,415.22

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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.