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Finding the Fourth Proportional to 482,389.43, 665,609.36 and 278,365.90

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Solution

The fourth proportional to 482,389.43, 665,609.36 and 278,365.90 is: 384,094.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,389.43 : 665,609.36 = 278,365.90 : x
  2. Step 2: Convert to fraction form
    482,389.43/665,609.36 = 278,365.90/x
  3. Step 3: Cross multiply
    482,389.43x = 665,609.36 × 278,365.90
  4. Step 4: Simplify right side
    482,389.43x = 185,282,948,544.82
  5. Step 5: Solve for x
    x = 185,282,948,544.82/482,389.43
  6. Step 6: Final answer
    x = 384,094.13

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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.