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Finding the Fourth Proportional to 272,597.40, 408,896.10 and 172,870.20

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Solution

The fourth proportional to 272,597.40, 408,896.10 and 172,870.20 is: 259,305.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,597.40 : 408,896.10 = 172,870.20 : x
  2. Step 2: Convert to fraction form
    272,597.40/408,896.10 = 172,870.20/x
  3. Step 3: Cross multiply
    272,597.40x = 408,896.10 × 172,870.20
  4. Step 4: Simplify right side
    272,597.40x = 70,685,950,586.22
  5. Step 5: Solve for x
    x = 70,685,950,586.22/272,597.40
  6. Step 6: Final answer
    x = 259,305.30

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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.