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Finding the Fourth Proportional to 660,530.82, 990,794.37 and 187,220.28

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Solution

The fourth proportional to 660,530.82, 990,794.37 and 187,220.28 is: 280,829.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,530.82 : 990,794.37 = 187,220.28 : x
  2. Step 2: Convert to fraction form
    660,530.82/990,794.37 = 187,220.28/x
  3. Step 3: Cross multiply
    660,530.82x = 990,794.37 × 187,220.28
  4. Step 4: Simplify right side
    660,530.82x = 185,496,799,373.82
  5. Step 5: Solve for x
    x = 185,496,799,373.82/660,530.82
  6. Step 6: Final answer
    x = 280,829.89

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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.