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Finding the Fourth Proportional to 287,403.95, 396,617.56 and 166,615.26

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Solution

The fourth proportional to 287,403.95, 396,617.56 and 166,615.26 is: 229,929.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,403.95 : 396,617.56 = 166,615.26 : x
  2. Step 2: Convert to fraction form
    287,403.95/396,617.56 = 166,615.26/x
  3. Step 3: Cross multiply
    287,403.95x = 396,617.56 × 166,615.26
  4. Step 4: Simplify right side
    287,403.95x = 66,082,537,879.97
  5. Step 5: Solve for x
    x = 66,082,537,879.97/287,403.95
  6. Step 6: Final answer
    x = 229,929.12

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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.