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Finding the Fourth Proportional to 318,929.67, 440,102.05 and 175,689.71

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Solution

The fourth proportional to 318,929.67, 440,102.05 and 175,689.71 is: 242,440.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,929.67 : 440,102.05 = 175,689.71 : x
  2. Step 2: Convert to fraction form
    318,929.67/440,102.05 = 175,689.71/x
  3. Step 3: Cross multiply
    318,929.67x = 440,102.05 × 175,689.71
  4. Step 4: Simplify right side
    318,929.67x = 77,321,400,298.49
  5. Step 5: Solve for x
    x = 77,321,400,298.49/318,929.67
  6. Step 6: Final answer
    x = 242,440.29

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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.