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Finding the Fourth Proportional to 455,613.80, 683,420.70 and 243,037.40

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Solution

The fourth proportional to 455,613.80, 683,420.70 and 243,037.40 is: 364,556.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,613.80 : 683,420.70 = 243,037.40 : x
  2. Step 2: Convert to fraction form
    455,613.80/683,420.70 = 243,037.40/x
  3. Step 3: Cross multiply
    455,613.80x = 683,420.70 × 243,037.40
  4. Step 4: Simplify right side
    455,613.80x = 166,096,790,034.18
  5. Step 5: Solve for x
    x = 166,096,790,034.18/455,613.80
  6. Step 6: Final answer
    x = 364,556.10

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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.