Home / 692,143.70-1,038,021.15-218,974.10

Finding the Fourth Proportional to 692,143.70, 1,038,021.15 and 218,974.10

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Solution

The fourth proportional to 692,143.70, 1,038,021.15 and 218,974.10 is: 328,399.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,143.70 : 1,038,021.15 = 218,974.10 : x
  2. Step 2: Convert to fraction form
    692,143.70/1,038,021.15 = 218,974.10/x
  3. Step 3: Cross multiply
    692,143.70x = 1,038,021.15 × 218,974.10
  4. Step 4: Simplify right side
    692,143.70x = 227,299,747,102.22
  5. Step 5: Solve for x
    x = 227,299,747,102.22/692,143.70
  6. Step 6: Final answer
    x = 328,399.65

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1.5x scale

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.