Home / 213,028.80-319,154.40-129,825.60

Finding the Fourth Proportional to 213,028.80, 319,154.40 and 129,825.60

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Solution

The fourth proportional to 213,028.80, 319,154.40 and 129,825.60 is: 194,501.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,028.80 : 319,154.40 = 129,825.60 : x
  2. Step 2: Convert to fraction form
    213,028.80/319,154.40 = 129,825.60/x
  3. Step 3: Cross multiply
    213,028.80x = 319,154.40 × 129,825.60
  4. Step 4: Simplify right side
    213,028.80x = 41,434,411,472.64
  5. Step 5: Solve for x
    x = 41,434,411,472.64/213,028.80
  6. Step 6: Final answer
    x = 194,501.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.