Home / 210,231.18-315,428.18-77,203.26

Finding the Fourth Proportional to 210,231.18, 315,428.18 and 77,203.26

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Solution

The fourth proportional to 210,231.18, 315,428.18 and 77,203.26 is: 115,834.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,231.18 : 315,428.18 = 77,203.26 : x
  2. Step 2: Convert to fraction form
    210,231.18/315,428.18 = 77,203.26/x
  3. Step 3: Cross multiply
    210,231.18x = 315,428.18 × 77,203.26
  4. Step 4: Simplify right side
    210,231.18x = 24,352,083,405.85
  5. Step 5: Solve for x
    x = 24,352,083,405.85/210,231.18
  6. Step 6: Final answer
    x = 115,834.78

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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.