Home / 281,147.72-387,993.51-153,823.28

Finding the Fourth Proportional to 281,147.72, 387,993.51 and 153,823.28

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Solution

The fourth proportional to 281,147.72, 387,993.51 and 153,823.28 is: 212,281.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,147.72 : 387,993.51 = 153,823.28 : x
  2. Step 2: Convert to fraction form
    281,147.72/387,993.51 = 153,823.28/x
  3. Step 3: Cross multiply
    281,147.72x = 387,993.51 × 153,823.28
  4. Step 4: Simplify right side
    281,147.72x = 59,682,432,386.95
  5. Step 5: Solve for x
    x = 59,682,432,386.95/281,147.72
  6. Step 6: Final answer
    x = 212,281.41

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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.