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Finding the Fourth Proportional to 250,465.68, 345,638.88 and 137,288.64

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Solution

The fourth proportional to 250,465.68, 345,638.88 and 137,288.64 is: 189,456.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,465.68 : 345,638.88 = 137,288.64 : x
  2. Step 2: Convert to fraction form
    250,465.68/345,638.88 = 137,288.64/x
  3. Step 3: Cross multiply
    250,465.68x = 345,638.88 × 137,288.64
  4. Step 4: Simplify right side
    250,465.68x = 47,452,291,766.32
  5. Step 5: Solve for x
    x = 47,452,291,766.32/250,465.68
  6. Step 6: Final answer
    x = 189,456.26

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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.