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Finding the Fourth Proportional to 419,190.50, 578,482.90 and 228,192.50

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Solution

The fourth proportional to 419,190.50, 578,482.90 and 228,192.50 is: 314,905.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,190.50 : 578,482.90 = 228,192.50 : x
  2. Step 2: Convert to fraction form
    419,190.50/578,482.90 = 228,192.50/x
  3. Step 3: Cross multiply
    419,190.50x = 578,482.90 × 228,192.50
  4. Step 4: Simplify right side
    419,190.50x = 132,005,459,158.25
  5. Step 5: Solve for x
    x = 132,005,459,158.25/419,190.50
  6. Step 6: Final answer
    x = 314,905.66

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