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Finding the Fourth Proportional to 253,302.90, 349,552.99 and 138,580.28

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Solution

The fourth proportional to 253,302.90, 349,552.99 and 138,580.28 is: 191,238.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,302.90 : 349,552.99 = 138,580.28 : x
  2. Step 2: Convert to fraction form
    253,302.90/349,552.99 = 138,580.28/x
  3. Step 3: Cross multiply
    253,302.90x = 349,552.99 × 138,580.28
  4. Step 4: Simplify right side
    253,302.90x = 48,441,151,846.64
  5. Step 5: Solve for x
    x = 48,441,151,846.64/253,302.90
  6. Step 6: Final answer
    x = 191,238.05

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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.