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Finding the Fourth Proportional to 253,090.85, 349,127.21 and 162,345.87

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Solution

The fourth proportional to 253,090.85, 349,127.21 and 162,345.87 is: 223,948.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,090.85 : 349,127.21 = 162,345.87 : x
  2. Step 2: Convert to fraction form
    253,090.85/349,127.21 = 162,345.87/x
  3. Step 3: Cross multiply
    253,090.85x = 349,127.21 × 162,345.87
  4. Step 4: Simplify right side
    253,090.85x = 56,679,361,053.99
  5. Step 5: Solve for x
    x = 56,679,361,053.99/253,090.85
  6. Step 6: Final answer
    x = 223,948.68

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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.