Home / 200,619,371.25-300,537,455.81-138,223,492.34

Finding the Fourth Proportional to 200,619,371.25, 300,537,455.81 and 138,223,492.34

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Solution

The fourth proportional to 200,619,371.25, 300,537,455.81 and 138,223,492.34 is: 207,065,431.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,619,371.25 : 300,537,455.81 = 138,223,492.34 : x
  2. Step 2: Convert to fraction form
    200,619,371.25/300,537,455.81 = 138,223,492.34/x
  3. Step 3: Cross multiply
    200,619,371.25x = 300,537,455.81 × 138,223,492.34
  4. Step 4: Simplify right side
    200,619,371.25x = 41,541,336,718,842,824
  5. Step 5: Solve for x
    x = 41,541,336,718,842,824/200,619,371.25
  6. Step 6: Final answer
    x = 207,065,431.72

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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.