Home / 455,390.10-683,279.55-218,610.90

Finding the Fourth Proportional to 455,390.10, 683,279.55 and 218,610.90

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Solution

The fourth proportional to 455,390.10, 683,279.55 and 218,610.90 is: 328,009.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,390.10 : 683,279.55 = 218,610.90 : x
  2. Step 2: Convert to fraction form
    455,390.10/683,279.55 = 218,610.90/x
  3. Step 3: Cross multiply
    455,390.10x = 683,279.55 × 218,610.90
  4. Step 4: Simplify right side
    455,390.10x = 149,372,357,377.10
  5. Step 5: Solve for x
    x = 149,372,357,377.10/455,390.10
  6. Step 6: Final answer
    x = 328,009.67

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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.