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Finding the Fourth Proportional to 360,017.80, 538,860.30 and 255,041.80

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Solution

The fourth proportional to 360,017.80, 538,860.30 and 255,041.80 is: 381,736.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,017.80 : 538,860.30 = 255,041.80 : x
  2. Step 2: Convert to fraction form
    360,017.80/538,860.30 = 255,041.80/x
  3. Step 3: Cross multiply
    360,017.80x = 538,860.30 × 255,041.80
  4. Step 4: Simplify right side
    360,017.80x = 137,431,900,860.54
  5. Step 5: Solve for x
    x = 137,431,900,860.54/360,017.80
  6. Step 6: Final answer
    x = 381,736.41

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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.