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Finding the Fourth Proportional to 223,678.98, 308,670.84 and 126,900.54

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Solution

The fourth proportional to 223,678.98, 308,670.84 and 126,900.54 is: 175,119.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,678.98 : 308,670.84 = 126,900.54 : x
  2. Step 2: Convert to fraction form
    223,678.98/308,670.84 = 126,900.54/x
  3. Step 3: Cross multiply
    223,678.98x = 308,670.84 × 126,900.54
  4. Step 4: Simplify right side
    223,678.98x = 39,170,496,278.25
  5. Step 5: Solve for x
    x = 39,170,496,278.25/223,678.98
  6. Step 6: Final answer
    x = 175,119.25

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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.