Home / 621,427.03-931,989.08-172,136.23

Finding the Fourth Proportional to 621,427.03, 931,989.08 and 172,136.23

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Solution

The fourth proportional to 621,427.03, 931,989.08 and 172,136.23 is: 258,162.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,427.03 : 931,989.08 = 172,136.23 : x
  2. Step 2: Convert to fraction form
    621,427.03/931,989.08 = 172,136.23/x
  3. Step 3: Cross multiply
    621,427.03x = 931,989.08 × 172,136.23
  4. Step 4: Simplify right side
    621,427.03x = 160,429,085,771.69
  5. Step 5: Solve for x
    x = 160,429,085,771.69/621,427.03
  6. Step 6: Final answer
    x = 258,162.39

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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.