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Finding the Fourth Proportional to 250,459.08, 345,620.70 and 137,259.96

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Solution

The fourth proportional to 250,459.08, 345,620.70 and 137,259.96 is: 189,411.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,459.08 : 345,620.70 = 137,259.96 : x
  2. Step 2: Convert to fraction form
    250,459.08/345,620.70 = 137,259.96/x
  3. Step 3: Cross multiply
    250,459.08x = 345,620.70 × 137,259.96
  4. Step 4: Simplify right side
    250,459.08x = 47,439,883,457.17
  5. Step 5: Solve for x
    x = 47,439,883,457.17/250,459.08
  6. Step 6: Final answer
    x = 189,411.71

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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.