Home / 287,629.81-396,942.71-160,306.31

Finding the Fourth Proportional to 287,629.81, 396,942.71 and 160,306.31

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Solution

The fourth proportional to 287,629.81, 396,942.71 and 160,306.31 is: 221,230.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,629.81 : 396,942.71 = 160,306.31 : x
  2. Step 2: Convert to fraction form
    287,629.81/396,942.71 = 160,306.31/x
  3. Step 3: Cross multiply
    287,629.81x = 396,942.71 × 160,306.31
  4. Step 4: Simplify right side
    287,629.81x = 63,632,421,312.33
  5. Step 5: Solve for x
    x = 63,632,421,312.33/287,629.81
  6. Step 6: Final answer
    x = 221,230.27

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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.