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Finding the Fourth Proportional to 410,043.20, 615,064.80 and 251,758.40

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Solution

The fourth proportional to 410,043.20, 615,064.80 and 251,758.40 is: 377,637.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,043.20 : 615,064.80 = 251,758.40 : x
  2. Step 2: Convert to fraction form
    410,043.20/615,064.80 = 251,758.40/x
  3. Step 3: Cross multiply
    410,043.20x = 615,064.80 × 251,758.40
  4. Step 4: Simplify right side
    410,043.20x = 154,847,729,944.32
  5. Step 5: Solve for x
    x = 154,847,729,944.32/410,043.20
  6. Step 6: Final answer
    x = 377,637.60

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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.