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Finding the Fourth Proportional to 613,014.40, 918,974.40 and 238,950.40

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Solution

The fourth proportional to 613,014.40, 918,974.40 and 238,950.40 is: 358,212.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,014.40 : 918,974.40 = 238,950.40 : x
  2. Step 2: Convert to fraction form
    613,014.40/918,974.40 = 238,950.40/x
  3. Step 3: Cross multiply
    613,014.40x = 918,974.40 × 238,950.40
  4. Step 4: Simplify right side
    613,014.40x = 219,589,300,469.76
  5. Step 5: Solve for x
    x = 219,589,300,469.76/613,014.40
  6. Step 6: Final answer
    x = 358,212.30

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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.