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Finding the Fourth Proportional to 307,005.57, 458,349.72 and 234,579.43

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Solution

The fourth proportional to 307,005.57, 458,349.72 and 234,579.43 is: 350,219.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,005.57 : 458,349.72 = 234,579.43 : x
  2. Step 2: Convert to fraction form
    307,005.57/458,349.72 = 234,579.43/x
  3. Step 3: Cross multiply
    307,005.57x = 458,349.72 × 234,579.43
  4. Step 4: Simplify right side
    307,005.57x = 107,519,415,751.52
  5. Step 5: Solve for x
    x = 107,519,415,751.52/307,005.57
  6. Step 6: Final answer
    x = 350,219.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.