Home / 209,400,239.25-288,963,008.78-120,028,112.37

Finding the Fourth Proportional to 209,400,239.25, 288,963,008.78 and 120,028,112.37

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Solution

The fourth proportional to 209,400,239.25, 288,963,008.78 and 120,028,112.37 is: 165,633,452.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,400,239.25 : 288,963,008.78 = 120,028,112.37 : x
  2. Step 2: Convert to fraction form
    209,400,239.25/288,963,008.78 = 120,028,112.37/x
  3. Step 3: Cross multiply
    209,400,239.25x = 288,963,008.78 × 120,028,112.37
  4. Step 4: Simplify right side
    209,400,239.25x = 34,683,684,488,619,136
  5. Step 5: Solve for x
    x = 34,683,684,488,619,136/209,400,239.25
  6. Step 6: Final answer
    x = 165,633,452.06

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1.5x scale

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.