Home / 355,914.32-491,113.20-212,643.92

Finding the Fourth Proportional to 355,914.32, 491,113.20 and 212,643.92

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Solution

The fourth proportional to 355,914.32, 491,113.20 and 212,643.92 is: 293,419.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,914.32 : 491,113.20 = 212,643.92 : x
  2. Step 2: Convert to fraction form
    355,914.32/491,113.20 = 212,643.92/x
  3. Step 3: Cross multiply
    355,914.32x = 491,113.20 × 212,643.92
  4. Step 4: Simplify right side
    355,914.32x = 104,432,236,011.74
  5. Step 5: Solve for x
    x = 104,432,236,011.74/355,914.32
  6. Step 6: Final answer
    x = 293,419.60

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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.