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Finding the Fourth Proportional to 408,028.40, 612,041.67 and 108,509.06

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Solution

The fourth proportional to 408,028.40, 612,041.67 and 108,509.06 is: 162,763.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,028.40 : 612,041.67 = 108,509.06 : x
  2. Step 2: Convert to fraction form
    408,028.40/612,041.67 = 108,509.06/x
  3. Step 3: Cross multiply
    408,028.40x = 612,041.67 × 108,509.06
  4. Step 4: Simplify right side
    408,028.40x = 66,412,066,292.53
  5. Step 5: Solve for x
    x = 66,412,066,292.53/408,028.40
  6. Step 6: Final answer
    x = 162,763.34

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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.