Home / 213,623.36-320,431.56-87,235.84

Finding the Fourth Proportional to 213,623.36, 320,431.56 and 87,235.84

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Solution

The fourth proportional to 213,623.36, 320,431.56 and 87,235.84 is: 130,852.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,623.36 : 320,431.56 = 87,235.84 : x
  2. Step 2: Convert to fraction form
    213,623.36/320,431.56 = 87,235.84/x
  3. Step 3: Cross multiply
    213,623.36x = 320,431.56 × 87,235.84
  4. Step 4: Simplify right side
    213,623.36x = 27,953,116,299.11
  5. Step 5: Solve for x
    x = 27,953,116,299.11/213,623.36
  6. Step 6: Final answer
    x = 130,852.34

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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.