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Finding the Fourth Proportional to 311,073.06, 429,163.50 and 181,970.40

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Solution

The fourth proportional to 311,073.06, 429,163.50 and 181,970.40 is: 251,050.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,073.06 : 429,163.50 = 181,970.40 : x
  2. Step 2: Convert to fraction form
    311,073.06/429,163.50 = 181,970.40/x
  3. Step 3: Cross multiply
    311,073.06x = 429,163.50 × 181,970.40
  4. Step 4: Simplify right side
    311,073.06x = 78,095,053,760.40
  5. Step 5: Solve for x
    x = 78,095,053,760.40/311,073.06
  6. Step 6: Final answer
    x = 251,050.52

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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.