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Finding the Fourth Proportional to 419,242.42, 578,539.02 and 228,251.98

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Solution

The fourth proportional to 419,242.42, 578,539.02 and 228,251.98 is: 314,979.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,242.42 : 578,539.02 = 228,251.98 : x
  2. Step 2: Convert to fraction form
    419,242.42/578,539.02 = 228,251.98/x
  3. Step 3: Cross multiply
    419,242.42x = 578,539.02 × 228,251.98
  4. Step 4: Simplify right side
    419,242.42x = 132,052,676,822.26
  5. Step 5: Solve for x
    x = 132,052,676,822.26/419,242.42
  6. Step 6: Final answer
    x = 314,979.28

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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.