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Finding the Fourth Proportional to 253,514.21, 349,849.71 and 138,800.28

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Solution

The fourth proportional to 253,514.21, 349,849.71 and 138,800.28 is: 191,544.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,514.21 : 349,849.71 = 138,800.28 : x
  2. Step 2: Convert to fraction form
    253,514.21/349,849.71 = 138,800.28/x
  3. Step 3: Cross multiply
    253,514.21x = 349,849.71 × 138,800.28
  4. Step 4: Simplify right side
    253,514.21x = 48,559,238,627.48
  5. Step 5: Solve for x
    x = 48,559,238,627.48/253,514.21
  6. Step 6: Final answer
    x = 191,544.45

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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.