Home / 280,361.03-386,895.60-172,888.07

Finding the Fourth Proportional to 280,361.03, 386,895.60 and 172,888.07

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Solution

The fourth proportional to 280,361.03, 386,895.60 and 172,888.07 is: 238,583.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,361.03 : 386,895.60 = 172,888.07 : x
  2. Step 2: Convert to fraction form
    280,361.03/386,895.60 = 172,888.07/x
  3. Step 3: Cross multiply
    280,361.03x = 386,895.60 × 172,888.07
  4. Step 4: Simplify right side
    280,361.03x = 66,889,631,641.01
  5. Step 5: Solve for x
    x = 66,889,631,641.01/280,361.03
  6. Step 6: Final answer
    x = 238,583.92

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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.