Home / 388,365.11-582,276.92-172,106.08

Finding the Fourth Proportional to 388,365.11, 582,276.92 and 172,106.08

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Solution

The fourth proportional to 388,365.11, 582,276.92 and 172,106.08 is: 258,039.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,365.11 : 582,276.92 = 172,106.08 : x
  2. Step 2: Convert to fraction form
    388,365.11/582,276.92 = 172,106.08/x
  3. Step 3: Cross multiply
    388,365.11x = 582,276.92 × 172,106.08
  4. Step 4: Simplify right side
    388,365.11x = 100,213,395,859.45
  5. Step 5: Solve for x
    x = 100,213,395,859.45/388,365.11
  6. Step 6: Final answer
    x = 258,039.14

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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.