Home / 230,205.28-317,678.44-128,230.48

Finding the Fourth Proportional to 230,205.28, 317,678.44 and 128,230.48

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Solution

The fourth proportional to 230,205.28, 317,678.44 and 128,230.48 is: 176,955.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,205.28 : 317,678.44 = 128,230.48 : x
  2. Step 2: Convert to fraction form
    230,205.28/317,678.44 = 128,230.48/x
  3. Step 3: Cross multiply
    230,205.28x = 317,678.44 × 128,230.48
  4. Step 4: Simplify right side
    230,205.28x = 40,736,058,846.85
  5. Step 5: Solve for x
    x = 40,736,058,846.85/230,205.28
  6. Step 6: Final answer
    x = 176,955.36

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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.