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Finding the Fourth Proportional to 250,157.64, 345,214.12 and 136,980.40

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Solution

The fourth proportional to 250,157.64, 345,214.12 and 136,980.40 is: 189,031.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,157.64 : 345,214.12 = 136,980.40 : x
  2. Step 2: Convert to fraction form
    250,157.64/345,214.12 = 136,980.40/x
  3. Step 3: Cross multiply
    250,157.64x = 345,214.12 × 136,980.40
  4. Step 4: Simplify right side
    250,157.64x = 47,287,568,243.25
  5. Step 5: Solve for x
    x = 47,287,568,243.25/250,157.64
  6. Step 6: Final answer
    x = 189,031.08

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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.