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Finding the Fourth Proportional to 315,267.15, 435,074.99 and 172,033.23

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Solution

The fourth proportional to 315,267.15, 435,074.99 and 172,033.23 is: 237,409.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,267.15 : 435,074.99 = 172,033.23 : x
  2. Step 2: Convert to fraction form
    315,267.15/435,074.99 = 172,033.23/x
  3. Step 3: Cross multiply
    315,267.15x = 435,074.99 × 172,033.23
  4. Step 4: Simplify right side
    315,267.15x = 74,847,354,961.75
  5. Step 5: Solve for x
    x = 74,847,354,961.75/315,267.15
  6. Step 6: Final answer
    x = 237,409.30

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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.