Home / 355,687.20-490,914-228,521.76

Finding the Fourth Proportional to 355,687.20, 490,914 and 228,521.76

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Solution

The fourth proportional to 355,687.20, 490,914 and 228,521.76 is: 315,402.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,687.20 : 490,914 = 228,521.76 : x
  2. Step 2: Convert to fraction form
    355,687.20/490,914 = 228,521.76/x
  3. Step 3: Cross multiply
    355,687.20x = 490,914 × 228,521.76
  4. Step 4: Simplify right side
    355,687.20x = 112,184,531,288.64
  5. Step 5: Solve for x
    x = 112,184,531,288.64/355,687.20
  6. Step 6: Final answer
    x = 315,402.22

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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.