Home / 389,114.19-536,985.78-219,348.32

Finding the Fourth Proportional to 389,114.19, 536,985.78 and 219,348.32

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Solution

The fourth proportional to 389,114.19, 536,985.78 and 219,348.32 is: 302,705.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,114.19 : 536,985.78 = 219,348.32 : x
  2. Step 2: Convert to fraction form
    389,114.19/536,985.78 = 219,348.32/x
  3. Step 3: Cross multiply
    389,114.19x = 536,985.78 × 219,348.32
  4. Step 4: Simplify right side
    389,114.19x = 117,786,926,021.96
  5. Step 5: Solve for x
    x = 117,786,926,021.96/389,114.19
  6. Step 6: Final answer
    x = 302,705.30

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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.