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Finding the Fourth Proportional to 337,345.60, 505,518 and 137,421.76

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Solution

The fourth proportional to 337,345.60, 505,518 and 137,421.76 is: 205,928.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    337,345.60 : 505,518 = 137,421.76 : x
  2. Step 2: Convert to fraction form
    337,345.60/505,518 = 137,421.76/x
  3. Step 3: Cross multiply
    337,345.60x = 505,518 × 137,421.76
  4. Step 4: Simplify right side
    337,345.60x = 69,469,173,271.68
  5. Step 5: Solve for x
    x = 69,469,173,271.68/337,345.60
  6. Step 6: Final answer
    x = 205,928.80

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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.