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Finding the Fourth Proportional to 438,485.60, 657,797.12 and 185,766.72

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Solution

The fourth proportional to 438,485.60, 657,797.12 and 185,766.72 is: 278,679.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,485.60 : 657,797.12 = 185,766.72 : x
  2. Step 2: Convert to fraction form
    438,485.60/657,797.12 = 185,766.72/x
  3. Step 3: Cross multiply
    438,485.60x = 657,797.12 × 185,766.72
  4. Step 4: Simplify right side
    438,485.60x = 122,196,813,407.85
  5. Step 5: Solve for x
    x = 122,196,813,407.85/438,485.60
  6. Step 6: Final answer
    x = 278,679.19

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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.