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Finding the Fourth Proportional to 291,040.77, 436,561.26 and 130,929.69

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Solution

The fourth proportional to 291,040.77, 436,561.26 and 130,929.69 is: 196,394.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,040.77 : 436,561.26 = 130,929.69 : x
  2. Step 2: Convert to fraction form
    291,040.77/436,561.26 = 130,929.69/x
  3. Step 3: Cross multiply
    291,040.77x = 436,561.26 × 130,929.69
  4. Step 4: Simplify right side
    291,040.77x = 57,158,830,437.81
  5. Step 5: Solve for x
    x = 57,158,830,437.81/291,040.77
  6. Step 6: Final answer
    x = 196,394.58

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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.