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Finding the Fourth Proportional to 408,060.61, 612,090.12 and 108,541.51

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Solution

The fourth proportional to 408,060.61, 612,090.12 and 108,541.51 is: 162,812.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,060.61 : 612,090.12 = 108,541.51 : x
  2. Step 2: Convert to fraction form
    408,060.61/612,090.12 = 108,541.51/x
  3. Step 3: Cross multiply
    408,060.61x = 612,090.12 × 108,541.51
  4. Step 4: Simplify right side
    408,060.61x = 66,437,185,880.88
  5. Step 5: Solve for x
    x = 66,437,185,880.88/408,060.61
  6. Step 6: Final answer
    x = 162,812.05

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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.