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Finding the Fourth Proportional to 408,038.84, 612,009.52 and 108,541.32

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Solution

The fourth proportional to 408,038.84, 612,009.52 and 108,541.32 is: 162,799.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,038.84 : 612,009.52 = 108,541.32 : x
  2. Step 2: Convert to fraction form
    408,038.84/612,009.52 = 108,541.32/x
  3. Step 3: Cross multiply
    408,038.84x = 612,009.52 × 108,541.32
  4. Step 4: Simplify right side
    408,038.84x = 66,428,321,153.37
  5. Step 5: Solve for x
    x = 66,428,321,153.37/408,038.84
  6. Step 6: Final answer
    x = 162,799.01

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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.