Home / 427,868.22-641,875.23-214,737.78

Finding the Fourth Proportional to 427,868.22, 641,875.23 and 214,737.78

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Solution

The fourth proportional to 427,868.22, 641,875.23 and 214,737.78 is: 322,143.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,868.22 : 641,875.23 = 214,737.78 : x
  2. Step 2: Convert to fraction form
    427,868.22/641,875.23 = 214,737.78/x
  3. Step 3: Cross multiply
    427,868.22x = 641,875.23 × 214,737.78
  4. Step 4: Simplify right side
    427,868.22x = 137,834,861,927.19
  5. Step 5: Solve for x
    x = 137,834,861,927.19/427,868.22
  6. Step 6: Final answer
    x = 322,143.26

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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.