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Finding the Fourth Proportional to 482,851.61, 666,417.68 and 278,865.87

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Solution

The fourth proportional to 482,851.61, 666,417.68 and 278,865.87 is: 384,882.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,851.61 : 666,417.68 = 278,865.87 : x
  2. Step 2: Convert to fraction form
    482,851.61/666,417.68 = 278,865.87/x
  3. Step 3: Cross multiply
    482,851.61x = 666,417.68 × 278,865.87
  4. Step 4: Simplify right side
    482,851.61x = 185,841,144,837.55
  5. Step 5: Solve for x
    x = 185,841,144,837.55/482,851.61
  6. Step 6: Final answer
    x = 384,882.52

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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.