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Finding the Fourth Proportional to 424,866.76, 637,396.16 and 140,556.64

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Solution

The fourth proportional to 424,866.76, 637,396.16 and 140,556.64 is: 210,866.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,866.76 : 637,396.16 = 140,556.64 : x
  2. Step 2: Convert to fraction form
    424,866.76/637,396.16 = 140,556.64/x
  3. Step 3: Cross multiply
    424,866.76x = 637,396.16 × 140,556.64
  4. Step 4: Simplify right side
    424,866.76x = 89,590,262,598.50
  5. Step 5: Solve for x
    x = 89,590,262,598.50/424,866.76
  6. Step 6: Final answer
    x = 210,866.73

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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.