Home / 281,999.07-389,156.60-154,673.75

Finding the Fourth Proportional to 281,999.07, 389,156.60 and 154,673.75

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Solution

The fourth proportional to 281,999.07, 389,156.60 and 154,673.75 is: 213,448.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,999.07 : 389,156.60 = 154,673.75 : x
  2. Step 2: Convert to fraction form
    281,999.07/389,156.60 = 154,673.75/x
  3. Step 3: Cross multiply
    281,999.07x = 389,156.60 × 154,673.75
  4. Step 4: Simplify right side
    281,999.07x = 60,192,312,018.83
  5. Step 5: Solve for x
    x = 60,192,312,018.83/281,999.07
  6. Step 6: Final answer
    x = 213,448.62

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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.