Home / 420,826.95-631,329.20-136,495.41

Finding the Fourth Proportional to 420,826.95, 631,329.20 and 136,495.41

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Solution

The fourth proportional to 420,826.95, 631,329.20 and 136,495.41 is: 204,771.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,826.95 : 631,329.20 = 136,495.41 : x
  2. Step 2: Convert to fraction form
    420,826.95/631,329.20 = 136,495.41/x
  3. Step 3: Cross multiply
    420,826.95x = 631,329.20 × 136,495.41
  4. Step 4: Simplify right side
    420,826.95x = 86,173,537,316.50
  5. Step 5: Solve for x
    x = 86,173,537,316.50/420,826.95
  6. Step 6: Final answer
    x = 204,771.91

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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.