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Finding the Fourth Proportional to 287,606.40, 396,900.72 and 160,277.64

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Solution

The fourth proportional to 287,606.40, 396,900.72 and 160,277.64 is: 221,185.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,606.40 : 396,900.72 = 160,277.64 : x
  2. Step 2: Convert to fraction form
    287,606.40/396,900.72 = 160,277.64/x
  3. Step 3: Cross multiply
    287,606.40x = 396,900.72 × 160,277.64
  4. Step 4: Simplify right side
    287,606.40x = 63,614,310,715.90
  5. Step 5: Solve for x
    x = 63,614,310,715.90/287,606.40
  6. Step 6: Final answer
    x = 221,185.31

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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.