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Finding the Fourth Proportional to 455,812.65, 683,719.50 and 118,853.03

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Solution

The fourth proportional to 455,812.65, 683,719.50 and 118,853.03 is: 178,279.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,812.65 : 683,719.50 = 118,853.03 : x
  2. Step 2: Convert to fraction form
    455,812.65/683,719.50 = 118,853.03/x
  3. Step 3: Cross multiply
    455,812.65x = 683,719.50 × 118,853.03
  4. Step 4: Simplify right side
    455,812.65x = 81,262,134,245.09
  5. Step 5: Solve for x
    x = 81,262,134,245.09/455,812.65
  6. Step 6: Final answer
    x = 178,279.68

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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.