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Finding the Fourth Proportional to 666,138.54, 999,271.02 and 186,366.48

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Solution

The fourth proportional to 666,138.54, 999,271.02 and 186,366.48 is: 279,567.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,138.54 : 999,271.02 = 186,366.48 : x
  2. Step 2: Convert to fraction form
    666,138.54/999,271.02 = 186,366.48/x
  3. Step 3: Cross multiply
    666,138.54x = 999,271.02 × 186,366.48
  4. Step 4: Simplify right side
    666,138.54x = 186,230,622,563.41
  5. Step 5: Solve for x
    x = 186,230,622,563.41/666,138.54
  6. Step 6: Final answer
    x = 279,567.40

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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.