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Finding the Fourth Proportional to 307,319.05, 460,679.22 and 138,881.77

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Solution

The fourth proportional to 307,319.05, 460,679.22 and 138,881.77 is: 208,187.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,319.05 : 460,679.22 = 138,881.77 : x
  2. Step 2: Convert to fraction form
    307,319.05/460,679.22 = 138,881.77/x
  3. Step 3: Cross multiply
    307,319.05x = 460,679.22 × 138,881.77
  4. Step 4: Simplify right side
    307,319.05x = 63,979,945,475.82
  5. Step 5: Solve for x
    x = 63,979,945,475.82/307,319.05
  6. Step 6: Final answer
    x = 208,187.37

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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.