Home / 290,825.40-436,237.28-91,146.64

Finding the Fourth Proportional to 290,825.40, 436,237.28 and 91,146.64

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Solution

The fourth proportional to 290,825.40, 436,237.28 and 91,146.64 is: 136,719.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,825.40 : 436,237.28 = 91,146.64 : x
  2. Step 2: Convert to fraction form
    290,825.40/436,237.28 = 91,146.64/x
  3. Step 3: Cross multiply
    290,825.40x = 436,237.28 × 91,146.64
  4. Step 4: Simplify right side
    290,825.40x = 39,761,562,314.74
  5. Step 5: Solve for x
    x = 39,761,562,314.74/290,825.40
  6. Step 6: Final answer
    x = 136,719.70

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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.