Home / 455,511.12-683,274.78-139,970.76

Finding the Fourth Proportional to 455,511.12, 683,274.78 and 139,970.76

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Solution

The fourth proportional to 455,511.12, 683,274.78 and 139,970.76 is: 209,958.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,511.12 : 683,274.78 = 139,970.76 : x
  2. Step 2: Convert to fraction form
    455,511.12/683,274.78 = 139,970.76/x
  3. Step 3: Cross multiply
    455,511.12x = 683,274.78 × 139,970.76
  4. Step 4: Simplify right side
    455,511.12x = 95,638,490,245.43
  5. Step 5: Solve for x
    x = 95,638,490,245.43/455,511.12
  6. Step 6: Final answer
    x = 209,958.63

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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.