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Finding the Fourth Proportional to 417,966.40, 626,949.60 and 252,078.40

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Solution

The fourth proportional to 417,966.40, 626,949.60 and 252,078.40 is: 378,117.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,966.40 : 626,949.60 = 252,078.40 : x
  2. Step 2: Convert to fraction form
    417,966.40/626,949.60 = 252,078.40/x
  3. Step 3: Cross multiply
    417,966.40x = 626,949.60 × 252,078.40
  4. Step 4: Simplify right side
    417,966.40x = 158,040,452,048.64
  5. Step 5: Solve for x
    x = 158,040,452,048.64/417,966.40
  6. Step 6: Final answer
    x = 378,117.60

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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.