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Finding the Fourth Proportional to 309,041.56, 426,457.06 and 173,044.34

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Solution

The fourth proportional to 309,041.56, 426,457.06 and 173,044.34 is: 238,789.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,041.56 : 426,457.06 = 173,044.34 : x
  2. Step 2: Convert to fraction form
    309,041.56/426,457.06 = 173,044.34/x
  3. Step 3: Cross multiply
    309,041.56x = 426,457.06 × 173,044.34
  4. Step 4: Simplify right side
    309,041.56x = 73,795,979,520.36
  5. Step 5: Solve for x
    x = 73,795,979,520.36/309,041.56
  6. Step 6: Final answer
    x = 238,789.82

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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.