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Finding the Fourth Proportional to 250,436.80, 345,600.84 and 137,259.28

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Solution

The fourth proportional to 250,436.80, 345,600.84 and 137,259.28 is: 189,416.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,436.80 : 345,600.84 = 137,259.28 : x
  2. Step 2: Convert to fraction form
    250,436.80/345,600.84 = 137,259.28/x
  3. Step 3: Cross multiply
    250,436.80x = 345,600.84 × 137,259.28
  4. Step 4: Simplify right side
    250,436.80x = 47,436,922,465.80
  5. Step 5: Solve for x
    x = 47,436,922,465.80/250,436.80
  6. Step 6: Final answer
    x = 189,416.74

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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.