Home / 692,129.46-1,038,187.92-218,814.96

Finding the Fourth Proportional to 692,129.46, 1,038,187.92 and 218,814.96

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Solution

The fourth proportional to 692,129.46, 1,038,187.92 and 218,814.96 is: 328,220.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,129.46 : 1,038,187.92 = 218,814.96 : x
  2. Step 2: Convert to fraction form
    692,129.46/1,038,187.92 = 218,814.96/x
  3. Step 3: Cross multiply
    692,129.46x = 1,038,187.92 × 218,814.96
  4. Step 4: Simplify right side
    692,129.46x = 227,171,048,187.28
  5. Step 5: Solve for x
    x = 227,171,048,187.28/692,129.46
  6. Step 6: Final answer
    x = 328,220.46

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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.