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Finding the Fourth Proportional to 212,676.18, 318,488.97 and 158,511

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Solution

The fourth proportional to 212,676.18, 318,488.97 and 158,511 is: 237,374.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,676.18 : 318,488.97 = 158,511 : x
  2. Step 2: Convert to fraction form
    212,676.18/318,488.97 = 158,511/x
  3. Step 3: Cross multiply
    212,676.18x = 318,488.97 × 158,511
  4. Step 4: Simplify right side
    212,676.18x = 50,484,005,123.67
  5. Step 5: Solve for x
    x = 50,484,005,123.67/212,676.18
  6. Step 6: Final answer
    x = 237,374.99

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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.