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Finding the Fourth Proportional to 253,556.33, 349,907.75 and 138,842.20

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Solution

The fourth proportional to 253,556.33, 349,907.75 and 138,842.20 is: 191,602.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,556.33 : 349,907.75 = 138,842.20 : x
  2. Step 2: Convert to fraction form
    253,556.33/349,907.75 = 138,842.20/x
  3. Step 3: Cross multiply
    253,556.33x = 349,907.75 × 138,842.20
  4. Step 4: Simplify right side
    253,556.33x = 48,581,962,070.88
  5. Step 5: Solve for x
    x = 48,581,962,070.88/253,556.33
  6. Step 6: Final answer
    x = 191,602.25

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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.