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Finding the Fourth Proportional to 612,852.36, 919,278.52 and 192,162.12

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Solution

The fourth proportional to 612,852.36, 919,278.52 and 192,162.12 is: 288,243.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,852.36 : 919,278.52 = 192,162.12 : x
  2. Step 2: Convert to fraction form
    612,852.36/919,278.52 = 192,162.12/x
  3. Step 3: Cross multiply
    612,852.36x = 919,278.52 × 192,162.12
  4. Step 4: Simplify right side
    612,852.36x = 176,650,509,273.66
  5. Step 5: Solve for x
    x = 176,650,509,273.66/612,852.36
  6. Step 6: Final answer
    x = 288,243.17

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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.