Home / 219,543.74-329,241.81-86,389.10

Finding the Fourth Proportional to 219,543.74, 329,241.81 and 86,389.10

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Solution

The fourth proportional to 219,543.74, 329,241.81 and 86,389.10 is: 129,554.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,543.74 : 329,241.81 = 86,389.10 : x
  2. Step 2: Convert to fraction form
    219,543.74/329,241.81 = 86,389.10/x
  3. Step 3: Cross multiply
    219,543.74x = 329,241.81 × 86,389.10
  4. Step 4: Simplify right side
    219,543.74x = 28,442,903,648.27
  5. Step 5: Solve for x
    x = 28,442,903,648.27/219,543.74
  6. Step 6: Final answer
    x = 129,554.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.