Home / 389,113.69-536,985.09-219,347.81

Finding the Fourth Proportional to 389,113.69, 536,985.09 and 219,347.81

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Solution

The fourth proportional to 389,113.69, 536,985.09 and 219,347.81 is: 302,704.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,113.69 : 536,985.09 = 219,347.81 : x
  2. Step 2: Convert to fraction form
    389,113.69/536,985.09 = 219,347.81/x
  3. Step 3: Cross multiply
    389,113.69x = 536,985.09 × 219,347.81
  4. Step 4: Simplify right side
    389,113.69x = 117,786,504,836.62
  5. Step 5: Solve for x
    x = 117,786,504,836.62/389,113.69
  6. Step 6: Final answer
    x = 302,704.60

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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.