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Finding the Fourth Proportional to 258,763.56, 388,189.62 and 118,534.20

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Solution

The fourth proportional to 258,763.56, 388,189.62 and 118,534.20 is: 177,821.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,763.56 : 388,189.62 = 118,534.20 : x
  2. Step 2: Convert to fraction form
    258,763.56/388,189.62 = 118,534.20/x
  3. Step 3: Cross multiply
    258,763.56x = 388,189.62 × 118,534.20
  4. Step 4: Simplify right side
    258,763.56x = 46,013,746,055.00
  5. Step 5: Solve for x
    x = 46,013,746,055.00/258,763.56
  6. Step 6: Final answer
    x = 177,821.58

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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.