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Finding the Fourth Proportional to 318,871.30, 440,045.37 and 175,631.86

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Solution

The fourth proportional to 318,871.30, 440,045.37 and 175,631.86 is: 242,373.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,871.30 : 440,045.37 = 175,631.86 : x
  2. Step 2: Convert to fraction form
    318,871.30/440,045.37 = 175,631.86/x
  3. Step 3: Cross multiply
    318,871.30x = 440,045.37 × 175,631.86
  4. Step 4: Simplify right side
    318,871.30x = 77,285,986,817.49
  5. Step 5: Solve for x
    x = 77,285,986,817.49/318,871.30
  6. Step 6: Final answer
    x = 242,373.61

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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.