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Finding the Fourth Proportional to 309,400.45, 464,101.04 and 84,762.82

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Solution

The fourth proportional to 309,400.45, 464,101.04 and 84,762.82 is: 127,144.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,400.45 : 464,101.04 = 84,762.82 : x
  2. Step 2: Convert to fraction form
    309,400.45/464,101.04 = 84,762.82/x
  3. Step 3: Cross multiply
    309,400.45x = 464,101.04 × 84,762.82
  4. Step 4: Simplify right side
    309,400.45x = 39,338,512,915.33
  5. Step 5: Solve for x
    x = 39,338,512,915.33/309,400.45
  6. Step 6: Final answer
    x = 127,144.33

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1.5x scale

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.