Home / 419,310.04-578,630.11-238,018.68

Finding the Fourth Proportional to 419,310.04, 578,630.11 and 238,018.68

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Solution

The fourth proportional to 419,310.04, 578,630.11 and 238,018.68 is: 328,455.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,310.04 : 578,630.11 = 238,018.68 : x
  2. Step 2: Convert to fraction form
    419,310.04/578,630.11 = 238,018.68/x
  3. Step 3: Cross multiply
    419,310.04x = 578,630.11 × 238,018.68
  4. Step 4: Simplify right side
    419,310.04x = 137,724,774,990.46
  5. Step 5: Solve for x
    x = 137,724,774,990.46/419,310.04
  6. Step 6: Final answer
    x = 328,455.71

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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.