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Finding the Fourth Proportional to 253,879.24, 350,357.20 and 139,157

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Solution

The fourth proportional to 253,879.24, 350,357.20 and 139,157 is: 192,038.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,879.24 : 350,357.20 = 139,157 : x
  2. Step 2: Convert to fraction form
    253,879.24/350,357.20 = 139,157/x
  3. Step 3: Cross multiply
    253,879.24x = 350,357.20 × 139,157
  4. Step 4: Simplify right side
    253,879.24x = 48,754,656,880.40
  5. Step 5: Solve for x
    x = 48,754,656,880.40/253,879.24
  6. Step 6: Final answer
    x = 192,038.77

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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.