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Finding the Fourth Proportional to 250,231.40, 345,303.78 and 137,047.40

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Solution

The fourth proportional to 250,231.40, 345,303.78 and 137,047.40 is: 189,116.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,231.40 : 345,303.78 = 137,047.40 : x
  2. Step 2: Convert to fraction form
    250,231.40/345,303.78 = 137,047.40/x
  3. Step 3: Cross multiply
    250,231.40x = 345,303.78 × 137,047.40
  4. Step 4: Simplify right side
    250,231.40x = 47,322,985,259.17
  5. Step 5: Solve for x
    x = 47,322,985,259.17/250,231.40
  6. Step 6: Final answer
    x = 189,116.89

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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.