Home / 245,731.68-339,127.44-138,312.48

Finding the Fourth Proportional to 245,731.68, 339,127.44 and 138,312.48

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Solution

The fourth proportional to 245,731.68, 339,127.44 and 138,312.48 is: 190,881.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,731.68 : 339,127.44 = 138,312.48 : x
  2. Step 2: Convert to fraction form
    245,731.68/339,127.44 = 138,312.48/x
  3. Step 3: Cross multiply
    245,731.68x = 339,127.44 × 138,312.48
  4. Step 4: Simplify right side
    245,731.68x = 46,905,557,262.45
  5. Step 5: Solve for x
    x = 46,905,557,262.45/245,731.68
  6. Step 6: Final answer
    x = 190,881.20

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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.