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Finding the Fourth Proportional to 418,422.60, 577,419.60 and 227,435.40

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Solution

The fourth proportional to 418,422.60, 577,419.60 and 227,435.40 is: 313,858.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,422.60 : 577,419.60 = 227,435.40 : x
  2. Step 2: Convert to fraction form
    418,422.60/577,419.60 = 227,435.40/x
  3. Step 3: Cross multiply
    418,422.60x = 577,419.60 × 227,435.40
  4. Step 4: Simplify right side
    418,422.60x = 131,325,657,693.84
  5. Step 5: Solve for x
    x = 131,325,657,693.84/418,422.60
  6. Step 6: Final answer
    x = 313,858.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.