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Finding the Fourth Proportional to 281,537.28, 388,413.36 and 160,685.28

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Solution

The fourth proportional to 281,537.28, 388,413.36 and 160,685.28 is: 221,684.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,537.28 : 388,413.36 = 160,685.28 : x
  2. Step 2: Convert to fraction form
    281,537.28/388,413.36 = 160,685.28/x
  3. Step 3: Cross multiply
    281,537.28x = 388,413.36 × 160,685.28
  4. Step 4: Simplify right side
    281,537.28x = 62,412,309,507.34
  5. Step 5: Solve for x
    x = 62,412,309,507.34/281,537.28
  6. Step 6: Final answer
    x = 221,684.00

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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.