Home / 318,868.05-440,069.00-238,155.51

Finding the Fourth Proportional to 318,868.05, 440,069.00 and 238,155.51

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Solution

The fourth proportional to 318,868.05, 440,069.00 and 238,155.51 is: 328,677.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,868.05 : 440,069.00 = 238,155.51 : x
  2. Step 2: Convert to fraction form
    318,868.05/440,069.00 = 238,155.51/x
  3. Step 3: Cross multiply
    318,868.05x = 440,069.00 × 238,155.51
  4. Step 4: Simplify right side
    318,868.05x = 104,804,855,939.41
  5. Step 5: Solve for x
    x = 104,804,855,939.41/318,868.05
  6. Step 6: Final answer
    x = 328,677.82

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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.