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Finding the Fourth Proportional to 245,652.66, 338,996.75 and 138,222.63

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Solution

The fourth proportional to 245,652.66, 338,996.75 and 138,222.63 is: 190,745.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,652.66 : 338,996.75 = 138,222.63 : x
  2. Step 2: Convert to fraction form
    245,652.66/338,996.75 = 138,222.63/x
  3. Step 3: Cross multiply
    245,652.66x = 338,996.75 × 138,222.63
  4. Step 4: Simplify right side
    245,652.66x = 46,857,021,655.34
  5. Step 5: Solve for x
    x = 46,857,021,655.34/245,652.66
  6. Step 6: Final answer
    x = 190,745.02

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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.