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Finding the Fourth Proportional to 339,980.48, 469,166.40 and 189,074.24

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Solution

The fourth proportional to 339,980.48, 469,166.40 and 189,074.24 is: 260,918.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,980.48 : 469,166.40 = 189,074.24 : x
  2. Step 2: Convert to fraction form
    339,980.48/469,166.40 = 189,074.24/x
  3. Step 3: Cross multiply
    339,980.48x = 469,166.40 × 189,074.24
  4. Step 4: Simplify right side
    339,980.48x = 88,707,280,513.54
  5. Step 5: Solve for x
    x = 88,707,280,513.54/339,980.48
  6. Step 6: Final answer
    x = 260,918.75

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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.