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Finding the Fourth Proportional to 403,739.60, 605,390.70 and 167,106.20

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Solution

The fourth proportional to 403,739.60, 605,390.70 and 167,106.20 is: 250,568.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,739.60 : 605,390.70 = 167,106.20 : x
  2. Step 2: Convert to fraction form
    403,739.60/605,390.70 = 167,106.20/x
  3. Step 3: Cross multiply
    403,739.60x = 605,390.70 × 167,106.20
  4. Step 4: Simplify right side
    403,739.60x = 101,164,539,392.34
  5. Step 5: Solve for x
    x = 101,164,539,392.34/403,739.60
  6. Step 6: Final answer
    x = 250,568.78

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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.