Home / 319,851,405.20-441,411,989.70-178,726,051.28

Finding the Fourth Proportional to 319,851,405.20, 441,411,989.70 and 178,726,051.28

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Solution

The fourth proportional to 319,851,405.20, 441,411,989.70 and 178,726,051.28 is: 246,651,478.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,851,405.20 : 441,411,989.70 = 178,726,051.28 : x
  2. Step 2: Convert to fraction form
    319,851,405.20/441,411,989.70 = 178,726,051.28/x
  3. Step 3: Cross multiply
    319,851,405.20x = 441,411,989.70 × 178,726,051.28
  4. Step 4: Simplify right side
    319,851,405.20x = 78,891,821,906,729,024
  5. Step 5: Solve for x
    x = 78,891,821,906,729,024/319,851,405.20
  6. Step 6: Final answer
    x = 246,651,478.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.