Home / 288,783.36-433,236.96-86,395.50

Finding the Fourth Proportional to 288,783.36, 433,236.96 and 86,395.50

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Solution

The fourth proportional to 288,783.36, 433,236.96 and 86,395.50 is: 129,611.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,783.36 : 433,236.96 = 86,395.50 : x
  2. Step 2: Convert to fraction form
    288,783.36/433,236.96 = 86,395.50/x
  3. Step 3: Cross multiply
    288,783.36x = 433,236.96 × 86,395.50
  4. Step 4: Simplify right side
    288,783.36x = 37,429,723,777.68
  5. Step 5: Solve for x
    x = 37,429,723,777.68/288,783.36
  6. Step 6: Final answer
    x = 129,611.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.