Home / 288,557.54-432,858.06-86,137.66

Finding the Fourth Proportional to 288,557.54, 432,858.06 and 86,137.66

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Solution

The fourth proportional to 288,557.54, 432,858.06 and 86,137.66 is: 129,212.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,557.54 : 432,858.06 = 86,137.66 : x
  2. Step 2: Convert to fraction form
    288,557.54/432,858.06 = 86,137.66/x
  3. Step 3: Cross multiply
    288,557.54x = 432,858.06 × 86,137.66
  4. Step 4: Simplify right side
    288,557.54x = 37,285,379,318.39
  5. Step 5: Solve for x
    x = 37,285,379,318.39/288,557.54
  6. Step 6: Final answer
    x = 129,212.98

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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.