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Finding the Fourth Proportional to 408,058.70, 612,088.05 and 108,538.70

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Solution

The fourth proportional to 408,058.70, 612,088.05 and 108,538.70 is: 162,808.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,058.70 : 612,088.05 = 108,538.70 : x
  2. Step 2: Convert to fraction form
    408,058.70/612,088.05 = 108,538.70/x
  3. Step 3: Cross multiply
    408,058.70x = 612,088.05 × 108,538.70
  4. Step 4: Simplify right side
    408,058.70x = 66,435,241,232.54
  5. Step 5: Solve for x
    x = 66,435,241,232.54/408,058.70
  6. Step 6: Final answer
    x = 162,808.05

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1.5x scale

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.