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Finding the Fourth Proportional to 403,820.40, 605,730.60 and 245,967.60

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Solution

The fourth proportional to 403,820.40, 605,730.60 and 245,967.60 is: 368,951.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,820.40 : 605,730.60 = 245,967.60 : x
  2. Step 2: Convert to fraction form
    403,820.40/605,730.60 = 245,967.60/x
  3. Step 3: Cross multiply
    403,820.40x = 605,730.60 × 245,967.60
  4. Step 4: Simplify right side
    403,820.40x = 148,990,101,928.56
  5. Step 5: Solve for x
    x = 148,990,101,928.56/403,820.40
  6. Step 6: Final answer
    x = 368,951.40

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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.