Home / 419,377.20-578,719.95-238,064.88

Finding the Fourth Proportional to 419,377.20, 578,719.95 and 238,064.88

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Solution

The fourth proportional to 419,377.20, 578,719.95 and 238,064.88 is: 328,517.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,377.20 : 578,719.95 = 238,064.88 : x
  2. Step 2: Convert to fraction form
    419,377.20/578,719.95 = 238,064.88/x
  3. Step 3: Cross multiply
    419,377.20x = 578,719.95 × 238,064.88
  4. Step 4: Simplify right side
    419,377.20x = 137,772,895,450.36
  5. Step 5: Solve for x
    x = 137,772,895,450.36/419,377.20
  6. Step 6: Final answer
    x = 328,517.85

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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.