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Finding the Fourth Proportional to 354,852.34, 488,453.24 and 309,450.22

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Solution

The fourth proportional to 354,852.34, 488,453.24 and 309,450.22 is: 425,957.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,852.34 : 488,453.24 = 309,450.22 : x
  2. Step 2: Convert to fraction form
    354,852.34/488,453.24 = 309,450.22/x
  3. Step 3: Cross multiply
    354,852.34x = 488,453.24 × 309,450.22
  4. Step 4: Simplify right side
    354,852.34x = 151,151,960,135.45
  5. Step 5: Solve for x
    x = 151,151,960,135.45/354,852.34
  6. Step 6: Final answer
    x = 425,957.35

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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.