Home / 287,556.81-396,823.08-156,735.60

Finding the Fourth Proportional to 287,556.81, 396,823.08 and 156,735.60

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Solution

The fourth proportional to 287,556.81, 396,823.08 and 156,735.60 is: 216,292.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,556.81 : 396,823.08 = 156,735.60 : x
  2. Step 2: Convert to fraction form
    287,556.81/396,823.08 = 156,735.60/x
  3. Step 3: Cross multiply
    287,556.81x = 396,823.08 × 156,735.60
  4. Step 4: Simplify right side
    287,556.81x = 62,196,303,537.65
  5. Step 5: Solve for x
    x = 62,196,303,537.65/287,556.81
  6. Step 6: Final answer
    x = 216,292.23

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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.