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Finding the Fourth Proportional to 381,017.40, 570,942.90 and 360,022.20

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Solution

The fourth proportional to 381,017.40, 570,942.90 and 360,022.20 is: 539,482.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,017.40 : 570,942.90 = 360,022.20 : x
  2. Step 2: Convert to fraction form
    381,017.40/570,942.90 = 360,022.20/x
  3. Step 3: Cross multiply
    381,017.40x = 570,942.90 × 360,022.20
  4. Step 4: Simplify right side
    381,017.40x = 205,552,118,932.38
  5. Step 5: Solve for x
    x = 205,552,118,932.38/381,017.40
  6. Step 6: Final answer
    x = 539,482.24

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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.