Home / 230,005.35-317,407.32-128,028.60

Finding the Fourth Proportional to 230,005.35, 317,407.32 and 128,028.60

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Solution

The fourth proportional to 230,005.35, 317,407.32 and 128,028.60 is: 176,679.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,005.35 : 317,407.32 = 128,028.60 : x
  2. Step 2: Convert to fraction form
    230,005.35/317,407.32 = 128,028.60/x
  3. Step 3: Cross multiply
    230,005.35x = 317,407.32 × 128,028.60
  4. Step 4: Simplify right side
    230,005.35x = 40,637,214,809.35
  5. Step 5: Solve for x
    x = 40,637,214,809.35/230,005.35
  6. Step 6: Final answer
    x = 176,679.43

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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.