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Finding the Fourth Proportional to 302,561.80, 453,842.70 and 255,905.80

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Solution

The fourth proportional to 302,561.80, 453,842.70 and 255,905.80 is: 383,858.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,561.80 : 453,842.70 = 255,905.80 : x
  2. Step 2: Convert to fraction form
    302,561.80/453,842.70 = 255,905.80/x
  3. Step 3: Cross multiply
    302,561.80x = 453,842.70 × 255,905.80
  4. Step 4: Simplify right side
    302,561.80x = 116,140,979,217.66
  5. Step 5: Solve for x
    x = 116,140,979,217.66/302,561.80
  6. Step 6: Final answer
    x = 383,858.70

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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.