Home / 230,331.04-317,851.60-128,356

Finding the Fourth Proportional to 230,331.04, 317,851.60 and 128,356

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Solution

The fourth proportional to 230,331.04, 317,851.60 and 128,356 is: 177,128.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,331.04 : 317,851.60 = 128,356 : x
  2. Step 2: Convert to fraction form
    230,331.04/317,851.60 = 128,356/x
  3. Step 3: Cross multiply
    230,331.04x = 317,851.60 × 128,356
  4. Step 4: Simplify right side
    230,331.04x = 40,798,159,969.60
  5. Step 5: Solve for x
    x = 40,798,159,969.60/230,331.04
  6. Step 6: Final answer
    x = 177,128.36

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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.