Home / 291,509.45-402,383.70-170,689.58

Finding the Fourth Proportional to 291,509.45, 402,383.70 and 170,689.58

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Solution

The fourth proportional to 291,509.45, 402,383.70 and 170,689.58 is: 235,610.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,509.45 : 402,383.70 = 170,689.58 : x
  2. Step 2: Convert to fraction form
    291,509.45/402,383.70 = 170,689.58/x
  3. Step 3: Cross multiply
    291,509.45x = 402,383.70 × 170,689.58
  4. Step 4: Simplify right side
    291,509.45x = 68,682,702,739.93
  5. Step 5: Solve for x
    x = 68,682,702,739.93/291,509.45
  6. Step 6: Final answer
    x = 235,610.56

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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.