Home / 290,854.42-436,281.75-91,190.36

Finding the Fourth Proportional to 290,854.42, 436,281.75 and 91,190.36

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Solution

The fourth proportional to 290,854.42, 436,281.75 and 91,190.36 is: 136,785.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,854.42 : 436,281.75 = 91,190.36 : x
  2. Step 2: Convert to fraction form
    290,854.42/436,281.75 = 91,190.36/x
  3. Step 3: Cross multiply
    290,854.42x = 436,281.75 × 91,190.36
  4. Step 4: Simplify right side
    290,854.42x = 39,784,690,934.63
  5. Step 5: Solve for x
    x = 39,784,690,934.63/290,854.42
  6. Step 6: Final answer
    x = 136,785.58

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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.