Home / 418,421.32-577,419.78-227,434.12

Finding the Fourth Proportional to 418,421.32, 577,419.78 and 227,434.12

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Solution

The fourth proportional to 418,421.32, 577,419.78 and 227,434.12 is: 313,858.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,421.32 : 577,419.78 = 227,434.12 : x
  2. Step 2: Convert to fraction form
    418,421.32/577,419.78 = 227,434.12/x
  3. Step 3: Cross multiply
    418,421.32x = 577,419.78 × 227,434.12
  4. Step 4: Simplify right side
    418,421.32x = 131,324,959,534.89
  5. Step 5: Solve for x
    x = 131,324,959,534.89/418,421.32
  6. Step 6: Final answer
    x = 313,858.19

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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.