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Finding the Fourth Proportional to 221,745.60, 306,002.40 and 121,143.60

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Solution

The fourth proportional to 221,745.60, 306,002.40 and 121,143.60 is: 167,174.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,745.60 : 306,002.40 = 121,143.60 : x
  2. Step 2: Convert to fraction form
    221,745.60/306,002.40 = 121,143.60/x
  3. Step 3: Cross multiply
    221,745.60x = 306,002.40 × 121,143.60
  4. Step 4: Simplify right side
    221,745.60x = 37,070,232,344.64
  5. Step 5: Solve for x
    x = 37,070,232,344.64/221,745.60
  6. Step 6: Final answer
    x = 167,174.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.