Home / 290,856.42-436,284.75-91,192.36

Finding the Fourth Proportional to 290,856.42, 436,284.75 and 91,192.36

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Solution

The fourth proportional to 290,856.42, 436,284.75 and 91,192.36 is: 136,788.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,856.42 : 436,284.75 = 91,192.36 : x
  2. Step 2: Convert to fraction form
    290,856.42/436,284.75 = 91,192.36/x
  3. Step 3: Cross multiply
    290,856.42x = 436,284.75 × 91,192.36
  4. Step 4: Simplify right side
    290,856.42x = 39,785,835,984.51
  5. Step 5: Solve for x
    x = 39,785,835,984.51/290,856.42
  6. Step 6: Final answer
    x = 136,788.58

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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.