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Finding the Fourth Proportional to 253,374.56, 349,656.86 and 138,653.22

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Solution

The fourth proportional to 253,374.56, 349,656.86 and 138,653.22 is: 191,341.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,374.56 : 349,656.86 = 138,653.22 : x
  2. Step 2: Convert to fraction form
    253,374.56/349,656.86 = 138,653.22/x
  3. Step 3: Cross multiply
    253,374.56x = 349,656.86 × 138,653.22
  4. Step 4: Simplify right side
    253,374.56x = 48,481,049,880.72
  5. Step 5: Solve for x
    x = 48,481,049,880.72/253,374.56
  6. Step 6: Final answer
    x = 191,341.43

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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.