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Finding the Fourth Proportional to 407,884.20, 612,215.46 and 250,420.20

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Solution

The fourth proportional to 407,884.20, 612,215.46 and 250,420.20 is: 375,869.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,884.20 : 612,215.46 = 250,420.20 : x
  2. Step 2: Convert to fraction form
    407,884.20/612,215.46 = 250,420.20/x
  3. Step 3: Cross multiply
    407,884.20x = 612,215.46 × 250,420.20
  4. Step 4: Simplify right side
    407,884.20x = 153,311,117,936.29
  5. Step 5: Solve for x
    x = 153,311,117,936.29/407,884.20
  6. Step 6: Final answer
    x = 375,869.22

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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.