Home / 395,043.40-545,158.15-213,758.54

Finding the Fourth Proportional to 395,043.40, 545,158.15 and 213,758.54

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Solution

The fourth proportional to 395,043.40, 545,158.15 and 213,758.54 is: 294,985.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,043.40 : 545,158.15 = 213,758.54 : x
  2. Step 2: Convert to fraction form
    395,043.40/545,158.15 = 213,758.54/x
  3. Step 3: Cross multiply
    395,043.40x = 545,158.15 × 213,758.54
  4. Step 4: Simplify right side
    395,043.40x = 116,532,210,213.10
  5. Step 5: Solve for x
    x = 116,532,210,213.10/395,043.40
  6. Step 6: Final answer
    x = 294,985.84

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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.