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Finding the Fourth Proportional to 216,040.40, 323,623.20 and 122,436.80

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Solution

The fourth proportional to 216,040.40, 323,623.20 and 122,436.80 is: 183,407.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,040.40 : 323,623.20 = 122,436.80 : x
  2. Step 2: Convert to fraction form
    216,040.40/323,623.20 = 122,436.80/x
  3. Step 3: Cross multiply
    216,040.40x = 323,623.20 × 122,436.80
  4. Step 4: Simplify right side
    216,040.40x = 39,623,389,013.76
  5. Step 5: Solve for x
    x = 39,623,389,013.76/216,040.40
  6. Step 6: Final answer
    x = 183,407.31

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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.