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Finding the Fourth Proportional to 482,521.65, 665,909.67 and 278,609.82

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Solution

The fourth proportional to 482,521.65, 665,909.67 and 278,609.82 is: 384,498.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,521.65 : 665,909.67 = 278,609.82 : x
  2. Step 2: Convert to fraction form
    482,521.65/665,909.67 = 278,609.82/x
  3. Step 3: Cross multiply
    482,521.65x = 665,909.67 × 278,609.82
  4. Step 4: Simplify right side
    482,521.65x = 185,528,973,294.96
  5. Step 5: Solve for x
    x = 185,528,973,294.96/482,521.65
  6. Step 6: Final answer
    x = 384,498.75

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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.