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Finding the Fourth Proportional to 323,907.30, 485,715.15 and 146,322.90

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Solution

The fourth proportional to 323,907.30, 485,715.15 and 146,322.90 is: 219,418.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,907.30 : 485,715.15 = 146,322.90 : x
  2. Step 2: Convert to fraction form
    323,907.30/485,715.15 = 146,322.90/x
  3. Step 3: Cross multiply
    323,907.30x = 485,715.15 × 146,322.90
  4. Step 4: Simplify right side
    323,907.30x = 71,071,249,321.94
  5. Step 5: Solve for x
    x = 71,071,249,321.94/323,907.30
  6. Step 6: Final answer
    x = 219,418.49

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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.