Home / 258,739,969.60-388,109,954.40-172,197,755.20

Finding the Fourth Proportional to 258,739,969.60, 388,109,954.40 and 172,197,755.20

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Solution

The fourth proportional to 258,739,969.60, 388,109,954.40 and 172,197,755.20 is: 258,296,632.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,739,969.60 : 388,109,954.40 = 172,197,755.20 : x
  2. Step 2: Convert to fraction form
    258,739,969.60/388,109,954.40 = 172,197,755.20/x
  3. Step 3: Cross multiply
    258,739,969.60x = 388,109,954.40 × 172,197,755.20
  4. Step 4: Simplify right side
    258,739,969.60x = 66,831,662,918,454,352
  5. Step 5: Solve for x
    x = 66,831,662,918,454,352/258,739,969.60
  6. Step 6: Final answer
    x = 258,296,632.80

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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.