Home / 420,826.45-631,328.44-136,494.92

Finding the Fourth Proportional to 420,826.45, 631,328.44 and 136,494.92

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Solution

The fourth proportional to 420,826.45, 631,328.44 and 136,494.92 is: 204,771.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,826.45 : 631,328.44 = 136,494.92 : x
  2. Step 2: Convert to fraction form
    420,826.45/631,328.44 = 136,494.92/x
  3. Step 3: Cross multiply
    420,826.45x = 631,328.44 × 136,494.92
  4. Step 4: Simplify right side
    420,826.45x = 86,173,124,911.52
  5. Step 5: Solve for x
    x = 86,173,124,911.52/420,826.45
  6. Step 6: Final answer
    x = 204,771.17

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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.