Home / 290,757,957.20-436,136,935.80-209,128,619.60

Finding the Fourth Proportional to 290,757,957.20, 436,136,935.80 and 209,128,619.60

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Solution

The fourth proportional to 290,757,957.20, 436,136,935.80 and 209,128,619.60 is: 313,692,929.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,757,957.20 : 436,136,935.80 = 209,128,619.60 : x
  2. Step 2: Convert to fraction form
    290,757,957.20/436,136,935.80 = 209,128,619.60/x
  3. Step 3: Cross multiply
    290,757,957.20x = 436,136,935.80 × 209,128,619.60
  4. Step 4: Simplify right side
    290,757,957.20x = 91,208,715,340,427,824
  5. Step 5: Solve for x
    x = 91,208,715,340,427,824/290,757,957.20
  6. Step 6: Final answer
    x = 313,692,929.40

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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.