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Finding the Fourth Proportional to 253,217.72, 349,426.32 and 138,473.72

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Solution

The fourth proportional to 253,217.72, 349,426.32 and 138,473.72 is: 191,086.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,217.72 : 349,426.32 = 138,473.72 : x
  2. Step 2: Convert to fraction form
    253,217.72/349,426.32 = 138,473.72/x
  3. Step 3: Cross multiply
    253,217.72x = 349,426.32 × 138,473.72
  4. Step 4: Simplify right side
    253,217.72x = 48,386,362,396.31
  5. Step 5: Solve for x
    x = 48,386,362,396.31/253,217.72
  6. Step 6: Final answer
    x = 191,086.00

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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.