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Finding the Fourth Proportional to 369,556.36, 510,118.86 and 218,653

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Solution

The fourth proportional to 369,556.36, 510,118.86 and 218,653 is: 301,818.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,556.36 : 510,118.86 = 218,653 : x
  2. Step 2: Convert to fraction form
    369,556.36/510,118.86 = 218,653/x
  3. Step 3: Cross multiply
    369,556.36x = 510,118.86 × 218,653
  4. Step 4: Simplify right side
    369,556.36x = 111,539,019,095.58
  5. Step 5: Solve for x
    x = 111,539,019,095.58/369,556.36
  6. Step 6: Final answer
    x = 301,818.70

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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.