Home / 287,683.65-396,995.18-160,356.51

Finding the Fourth Proportional to 287,683.65, 396,995.18 and 160,356.51

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Solution

The fourth proportional to 287,683.65, 396,995.18 and 160,356.51 is: 221,287.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,683.65 : 396,995.18 = 160,356.51 : x
  2. Step 2: Convert to fraction form
    287,683.65/396,995.18 = 160,356.51/x
  3. Step 3: Cross multiply
    287,683.65x = 396,995.18 × 160,356.51
  4. Step 4: Simplify right side
    287,683.65x = 63,660,760,749.84
  5. Step 5: Solve for x
    x = 63,660,760,749.84/287,683.65
  6. Step 6: Final answer
    x = 221,287.38

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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.