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Finding the Fourth Proportional to 389,450.80, 584,003.40 and 178,980.40

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Solution

The fourth proportional to 389,450.80, 584,003.40 and 178,980.40 is: 268,391.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,450.80 : 584,003.40 = 178,980.40 : x
  2. Step 2: Convert to fraction form
    389,450.80/584,003.40 = 178,980.40/x
  3. Step 3: Cross multiply
    389,450.80x = 584,003.40 × 178,980.40
  4. Step 4: Simplify right side
    389,450.80x = 104,525,162,133.36
  5. Step 5: Solve for x
    x = 104,525,162,133.36/389,450.80
  6. Step 6: Final answer
    x = 268,391.19

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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.