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Finding the Fourth Proportional to 309,879, 427,633.02 and 175,743

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Solution

The fourth proportional to 309,879, 427,633.02 and 175,743 is: 242,525.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,879 : 427,633.02 = 175,743 : x
  2. Step 2: Convert to fraction form
    309,879/427,633.02 = 175,743/x
  3. Step 3: Cross multiply
    309,879x = 427,633.02 × 175,743
  4. Step 4: Simplify right side
    309,879x = 75,153,509,833.86
  5. Step 5: Solve for x
    x = 75,153,509,833.86/309,879
  6. Step 6: Final answer
    x = 242,525.34

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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.