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Finding the Fourth Proportional to 302,472.15, 453,708.23 and 287,709.90

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Solution

The fourth proportional to 302,472.15, 453,708.23 and 287,709.90 is: 431,564.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,472.15 : 453,708.23 = 287,709.90 : x
  2. Step 2: Convert to fraction form
    302,472.15/453,708.23 = 287,709.90/x
  3. Step 3: Cross multiply
    302,472.15x = 453,708.23 × 287,709.90
  4. Step 4: Simplify right side
    302,472.15x = 130,536,348,043.93
  5. Step 5: Solve for x
    x = 130,536,348,043.93/302,472.15
  6. Step 6: Final answer
    x = 431,564.85

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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.