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Finding the Fourth Proportional to 250,453.88, 345,661.76 and 154,991.32

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Solution

The fourth proportional to 250,453.88, 345,661.76 and 154,991.32 is: 213,909.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,453.88 : 345,661.76 = 154,991.32 : x
  2. Step 2: Convert to fraction form
    250,453.88/345,661.76 = 154,991.32/x
  3. Step 3: Cross multiply
    250,453.88x = 345,661.76 × 154,991.32
  4. Step 4: Simplify right side
    250,453.88x = 53,574,572,455.92
  5. Step 5: Solve for x
    x = 53,574,572,455.92/250,453.88
  6. Step 6: Final answer
    x = 213,909.93

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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.