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Finding the Fourth Proportional to 472,139.43, 651,559.86 and 257,279.37

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Solution

The fourth proportional to 472,139.43, 651,559.86 and 257,279.37 is: 355,049.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,139.43 : 651,559.86 = 257,279.37 : x
  2. Step 2: Convert to fraction form
    472,139.43/651,559.86 = 257,279.37/x
  3. Step 3: Cross multiply
    472,139.43x = 651,559.86 × 257,279.37
  4. Step 4: Simplify right side
    472,139.43x = 167,632,910,298.09
  5. Step 5: Solve for x
    x = 167,632,910,298.09/472,139.43
  6. Step 6: Final answer
    x = 355,049.59

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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.