Home / 249,631,230.78-344,501,251.74-138,120,257.43

Finding the Fourth Proportional to 249,631,230.78, 344,501,251.74 and 138,120,257.43

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Solution

The fourth proportional to 249,631,230.78, 344,501,251.74 and 138,120,257.43 is: 190,611,573.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,631,230.78 : 344,501,251.74 = 138,120,257.43 : x
  2. Step 2: Convert to fraction form
    249,631,230.78/344,501,251.74 = 138,120,257.43/x
  3. Step 3: Cross multiply
    249,631,230.78x = 344,501,251.74 × 138,120,257.43
  4. Step 4: Simplify right side
    249,631,230.78x = 47,582,601,575,286,040
  5. Step 5: Solve for x
    x = 47,582,601,575,286,040/249,631,230.78
  6. Step 6: Final answer
    x = 190,611,573.03

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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.