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Finding the Fourth Proportional to 482,862.29, 666,381.80 and 278,921.80

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Solution

The fourth proportional to 482,862.29, 666,381.80 and 278,921.80 is: 384,930.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,862.29 : 666,381.80 = 278,921.80 : x
  2. Step 2: Convert to fraction form
    482,862.29/666,381.80 = 278,921.80/x
  3. Step 3: Cross multiply
    482,862.29x = 666,381.80 × 278,921.80
  4. Step 4: Simplify right side
    482,862.29x = 185,868,406,416.72
  5. Step 5: Solve for x
    x = 185,868,406,416.72/482,862.29
  6. Step 6: Final answer
    x = 384,930.47

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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.