Home / 281,088.11-387,638.70-223,917.50

Finding the Fourth Proportional to 281,088.11, 387,638.70 and 223,917.50

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Solution

The fourth proportional to 281,088.11, 387,638.70 and 223,917.50 is: 308,796.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,088.11 : 387,638.70 = 223,917.50 : x
  2. Step 2: Convert to fraction form
    281,088.11/387,638.70 = 223,917.50/x
  3. Step 3: Cross multiply
    281,088.11x = 387,638.70 × 223,917.50
  4. Step 4: Simplify right side
    281,088.11x = 86,799,086,669.06
  5. Step 5: Solve for x
    x = 86,799,086,669.06/281,088.11
  6. Step 6: Final answer
    x = 308,796.73

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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.