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Finding the Fourth Proportional to 275,953.17, 380,846.95 and 153,457.77

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Solution

The fourth proportional to 275,953.17, 380,846.95 and 153,457.77 is: 211,789.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,953.17 : 380,846.95 = 153,457.77 : x
  2. Step 2: Convert to fraction form
    275,953.17/380,846.95 = 153,457.77/x
  3. Step 3: Cross multiply
    275,953.17x = 380,846.95 × 153,457.77
  4. Step 4: Simplify right side
    275,953.17x = 58,443,923,658.30
  5. Step 5: Solve for x
    x = 58,443,923,658.30/275,953.17
  6. Step 6: Final answer
    x = 211,789.28

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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.