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Finding the Fourth Proportional to 302,006.63, 453,009.94 and 80,390.63

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Solution

The fourth proportional to 302,006.63, 453,009.94 and 80,390.63 is: 120,585.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,006.63 : 453,009.94 = 80,390.63 : x
  2. Step 2: Convert to fraction form
    302,006.63/453,009.94 = 80,390.63/x
  3. Step 3: Cross multiply
    302,006.63x = 453,009.94 × 80,390.63
  4. Step 4: Simplify right side
    302,006.63x = 36,417,754,472.86
  5. Step 5: Solve for x
    x = 36,417,754,472.86/302,006.63
  6. Step 6: Final answer
    x = 120,585.94

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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.