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Finding the Fourth Proportional to 220,898.10, 331,347.15 and 190,830.90

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Solution

The fourth proportional to 220,898.10, 331,347.15 and 190,830.90 is: 286,246.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,898.10 : 331,347.15 = 190,830.90 : x
  2. Step 2: Convert to fraction form
    220,898.10/331,347.15 = 190,830.90/x
  3. Step 3: Cross multiply
    220,898.10x = 331,347.15 × 190,830.90
  4. Step 4: Simplify right side
    220,898.10x = 63,231,274,846.94
  5. Step 5: Solve for x
    x = 63,231,274,846.94/220,898.10
  6. Step 6: Final answer
    x = 286,246.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.