Home / 230,309.02-317,823.18-128,338.77

Finding the Fourth Proportional to 230,309.02, 317,823.18 and 128,338.77

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Solution

The fourth proportional to 230,309.02, 317,823.18 and 128,338.77 is: 177,105.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,309.02 : 317,823.18 = 128,338.77 : x
  2. Step 2: Convert to fraction form
    230,309.02/317,823.18 = 128,338.77/x
  3. Step 3: Cross multiply
    230,309.02x = 317,823.18 × 128,338.77
  4. Step 4: Simplify right side
    230,309.02x = 40,789,035,998.69
  5. Step 5: Solve for x
    x = 40,789,035,998.69/230,309.02
  6. Step 6: Final answer
    x = 177,105.68

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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.