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Finding the Fourth Proportional to 351,452.69, 485,040.51 and 253,416.57

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Solution

The fourth proportional to 351,452.69, 485,040.51 and 253,416.57 is: 349,740.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,452.69 : 485,040.51 = 253,416.57 : x
  2. Step 2: Convert to fraction form
    351,452.69/485,040.51 = 253,416.57/x
  3. Step 3: Cross multiply
    351,452.69x = 485,040.51 × 253,416.57
  4. Step 4: Simplify right side
    351,452.69x = 122,917,302,355.25
  5. Step 5: Solve for x
    x = 122,917,302,355.25/351,452.69
  6. Step 6: Final answer
    x = 349,740.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.