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Finding the Fourth Proportional to 250,443.78, 375,499.08 and 130,205.40

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Solution

The fourth proportional to 250,443.78, 375,499.08 and 130,205.40 is: 195,221.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,443.78 : 375,499.08 = 130,205.40 : x
  2. Step 2: Convert to fraction form
    250,443.78/375,499.08 = 130,205.40/x
  3. Step 3: Cross multiply
    250,443.78x = 375,499.08 × 130,205.40
  4. Step 4: Simplify right side
    250,443.78x = 48,892,007,911.03
  5. Step 5: Solve for x
    x = 48,892,007,911.03/250,443.78
  6. Step 6: Final answer
    x = 195,221.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.