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Finding the Fourth Proportional to 287,605.40, 396,899.34 and 160,276.64

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Solution

The fourth proportional to 287,605.40, 396,899.34 and 160,276.64 is: 221,183.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,605.40 : 396,899.34 = 160,276.64 : x
  2. Step 2: Convert to fraction form
    287,605.40/396,899.34 = 160,276.64/x
  3. Step 3: Cross multiply
    287,605.40x = 396,899.34 × 160,276.64
  4. Step 4: Simplify right side
    287,605.40x = 63,613,692,633.42
  5. Step 5: Solve for x
    x = 63,613,692,633.42/287,605.40
  6. Step 6: Final answer
    x = 221,183.93

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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.