Home / 356,385.53-491,811.98-213,145.58

Finding the Fourth Proportional to 356,385.53, 491,811.98 and 213,145.58

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Solution

The fourth proportional to 356,385.53, 491,811.98 and 213,145.58 is: 294,140.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,385.53 : 491,811.98 = 213,145.58 : x
  2. Step 2: Convert to fraction form
    356,385.53/491,811.98 = 213,145.58/x
  3. Step 3: Cross multiply
    356,385.53x = 491,811.98 × 213,145.58
  4. Step 4: Simplify right side
    356,385.53x = 104,827,546,203.26
  5. Step 5: Solve for x
    x = 104,827,546,203.26/356,385.53
  6. Step 6: Final answer
    x = 294,140.86

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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.