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Finding the Fourth Proportional to 172,267.20, 258,400.80 and 153,240.30

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Solution

The fourth proportional to 172,267.20, 258,400.80 and 153,240.30 is: 229,860.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,267.20 : 258,400.80 = 153,240.30 : x
  2. Step 2: Convert to fraction form
    172,267.20/258,400.80 = 153,240.30/x
  3. Step 3: Cross multiply
    172,267.20x = 258,400.80 × 153,240.30
  4. Step 4: Simplify right side
    172,267.20x = 39,597,416,112.24
  5. Step 5: Solve for x
    x = 39,597,416,112.24/172,267.20
  6. Step 6: Final answer
    x = 229,860.45

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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.