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Finding the Fourth Proportional to 366,995.61, 550,427.81 and 100,721.07

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Solution

The fourth proportional to 366,995.61, 550,427.81 and 100,721.07 is: 151,063.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,995.61 : 550,427.81 = 100,721.07 : x
  2. Step 2: Convert to fraction form
    366,995.61/550,427.81 = 100,721.07/x
  3. Step 3: Cross multiply
    366,995.61x = 550,427.81 × 100,721.07
  4. Step 4: Simplify right side
    366,995.61x = 55,439,677,477.35
  5. Step 5: Solve for x
    x = 55,439,677,477.35/366,995.61
  6. Step 6: Final answer
    x = 151,063.60

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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.