Home / 245,457.18-338,732.91-138,026.28

Finding the Fourth Proportional to 245,457.18, 338,732.91 and 138,026.28

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Solution

The fourth proportional to 245,457.18, 338,732.91 and 138,026.28 is: 190,477.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,457.18 : 338,732.91 = 138,026.28 : x
  2. Step 2: Convert to fraction form
    245,457.18/338,732.91 = 138,026.28/x
  3. Step 3: Cross multiply
    245,457.18x = 338,732.91 × 138,026.28
  4. Step 4: Simplify right side
    245,457.18x = 46,754,043,480.87
  5. Step 5: Solve for x
    x = 46,754,043,480.87/245,457.18
  6. Step 6: Final answer
    x = 190,477.39

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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.