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Finding the Fourth Proportional to 418,994.37, 578,195.01 and 228,008.52

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Solution

The fourth proportional to 418,994.37, 578,195.01 and 228,008.52 is: 314,642.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,994.37 : 578,195.01 = 228,008.52 : x
  2. Step 2: Convert to fraction form
    418,994.37/578,195.01 = 228,008.52/x
  3. Step 3: Cross multiply
    418,994.37x = 578,195.01 × 228,008.52
  4. Step 4: Simplify right side
    418,994.37x = 131,833,388,501.49
  5. Step 5: Solve for x
    x = 131,833,388,501.49/418,994.37
  6. Step 6: Final answer
    x = 314,642.39

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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.