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Finding the Fourth Proportional to 287,404.76, 396,618.68 and 166,616.06

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Solution

The fourth proportional to 287,404.76, 396,618.68 and 166,616.06 is: 229,930.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,404.76 : 396,618.68 = 166,616.06 : x
  2. Step 2: Convert to fraction form
    287,404.76/396,618.68 = 166,616.06/x
  3. Step 3: Cross multiply
    287,404.76x = 396,618.68 × 166,616.06
  4. Step 4: Simplify right side
    287,404.76x = 66,083,041,784.00
  5. Step 5: Solve for x
    x = 66,083,041,784.00/287,404.76
  6. Step 6: Final answer
    x = 229,930.23

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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.