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Finding the Fourth Proportional to 408,636.09, 613,092.08 and 180,900.30

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Solution

The fourth proportional to 408,636.09, 613,092.08 and 180,900.30 is: 271,411.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,636.09 : 613,092.08 = 180,900.30 : x
  2. Step 2: Convert to fraction form
    408,636.09/613,092.08 = 180,900.30/x
  3. Step 3: Cross multiply
    408,636.09x = 613,092.08 × 180,900.30
  4. Step 4: Simplify right side
    408,636.09x = 110,908,538,152.67
  5. Step 5: Solve for x
    x = 110,908,538,152.67/408,636.09
  6. Step 6: Final answer
    x = 271,411.51

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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.