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Finding the Fourth Proportional to 253,499.55, 349,829.35 and 138,777.83

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Solution

The fourth proportional to 253,499.55, 349,829.35 and 138,777.83 is: 191,513.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,499.55 : 349,829.35 = 138,777.83 : x
  2. Step 2: Convert to fraction form
    253,499.55/349,829.35 = 138,777.83/x
  3. Step 3: Cross multiply
    253,499.55x = 349,829.35 × 138,777.83
  4. Step 4: Simplify right side
    253,499.55x = 48,548,558,063.31
  5. Step 5: Solve for x
    x = 48,548,558,063.31/253,499.55
  6. Step 6: Final answer
    x = 191,513.39

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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.