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Finding the Fourth Proportional to 250,509.68, 345,725.16 and 137,354.48

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Solution

The fourth proportional to 250,509.68, 345,725.16 and 137,354.48 is: 189,561.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,509.68 : 345,725.16 = 137,354.48 : x
  2. Step 2: Convert to fraction form
    250,509.68/345,725.16 = 137,354.48/x
  3. Step 3: Cross multiply
    250,509.68x = 345,725.16 × 137,354.48
  4. Step 4: Simplify right side
    250,509.68x = 47,486,899,574.72
  5. Step 5: Solve for x
    x = 47,486,899,574.72/250,509.68
  6. Step 6: Final answer
    x = 189,561.14

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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.