Home / 230,390.24-317,939.99-128,422.16

Finding the Fourth Proportional to 230,390.24, 317,939.99 and 128,422.16

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Solution

The fourth proportional to 230,390.24, 317,939.99 and 128,422.16 is: 177,223.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,390.24 : 317,939.99 = 128,422.16 : x
  2. Step 2: Convert to fraction form
    230,390.24/317,939.99 = 128,422.16/x
  3. Step 3: Cross multiply
    230,390.24x = 317,939.99 × 128,422.16
  4. Step 4: Simplify right side
    230,390.24x = 40,830,539,226.64
  5. Step 5: Solve for x
    x = 40,830,539,226.64/230,390.24
  6. Step 6: Final answer
    x = 177,223.39

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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.