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Finding the Fourth Proportional to 384,437.67, 530,521.88 and 212,367.48

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Solution

The fourth proportional to 384,437.67, 530,521.88 and 212,367.48 is: 293,065.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,437.67 : 530,521.88 = 212,367.48 : x
  2. Step 2: Convert to fraction form
    384,437.67/530,521.88 = 212,367.48/x
  3. Step 3: Cross multiply
    384,437.67x = 530,521.88 × 212,367.48
  4. Step 4: Simplify right side
    384,437.67x = 112,665,593,678.63
  5. Step 5: Solve for x
    x = 112,665,593,678.63/384,437.67
  6. Step 6: Final answer
    x = 293,065.96

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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.