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Finding the Fourth Proportional to 417,213.40, 625,820.10 and 251,325.40

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Solution

The fourth proportional to 417,213.40, 625,820.10 and 251,325.40 is: 376,988.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,213.40 : 625,820.10 = 251,325.40 : x
  2. Step 2: Convert to fraction form
    417,213.40/625,820.10 = 251,325.40/x
  3. Step 3: Cross multiply
    417,213.40x = 625,820.10 × 251,325.40
  4. Step 4: Simplify right side
    417,213.40x = 157,284,486,960.54
  5. Step 5: Solve for x
    x = 157,284,486,960.54/417,213.40
  6. Step 6: Final answer
    x = 376,988.10

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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.