Home / 318,868.30-440,069.34-238,155.76

Finding the Fourth Proportional to 318,868.30, 440,069.34 and 238,155.76

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Solution

The fourth proportional to 318,868.30, 440,069.34 and 238,155.76 is: 328,678.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,868.30 : 440,069.34 = 238,155.76 : x
  2. Step 2: Convert to fraction form
    318,868.30/440,069.34 = 238,155.76/x
  3. Step 3: Cross multiply
    318,868.30x = 440,069.34 × 238,155.76
  4. Step 4: Simplify right side
    318,868.30x = 104,805,048,120.40
  5. Step 5: Solve for x
    x = 104,805,048,120.40/318,868.30
  6. Step 6: Final answer
    x = 328,678.17

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1.5x scale

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.