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Finding the Fourth Proportional to 408,401.07, 612,201.66 and 228,574.32

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Solution

The fourth proportional to 408,401.07, 612,201.66 and 228,574.32 is: 342,637.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,401.07 : 612,201.66 = 228,574.32 : x
  2. Step 2: Convert to fraction form
    408,401.07/612,201.66 = 228,574.32/x
  3. Step 3: Cross multiply
    408,401.07x = 612,201.66 × 228,574.32
  4. Step 4: Simplify right side
    408,401.07x = 139,933,578,137.37
  5. Step 5: Solve for x
    x = 139,933,578,137.37/408,401.07
  6. Step 6: Final answer
    x = 342,637.64

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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.