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Finding the Fourth Proportional to 253,557.99, 349,908.74 and 138,834.56

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Solution

The fourth proportional to 253,557.99, 349,908.74 and 138,834.56 is: 191,590.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,557.99 : 349,908.74 = 138,834.56 : x
  2. Step 2: Convert to fraction form
    253,557.99/349,908.74 = 138,834.56/x
  3. Step 3: Cross multiply
    253,557.99x = 349,908.74 × 138,834.56
  4. Step 4: Simplify right side
    253,557.99x = 48,579,423,514.34
  5. Step 5: Solve for x
    x = 48,579,423,514.34/253,557.99
  6. Step 6: Final answer
    x = 191,590.98

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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.