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Finding the Fourth Proportional to 508,166.47, 701,264.95 and 278,719.09

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Solution

The fourth proportional to 508,166.47, 701,264.95 and 278,719.09 is: 384,629.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,166.47 : 701,264.95 = 278,719.09 : x
  2. Step 2: Convert to fraction form
    508,166.47/701,264.95 = 278,719.09/x
  3. Step 3: Cross multiply
    508,166.47x = 701,264.95 × 278,719.09
  4. Step 4: Simplify right side
    508,166.47x = 195,455,926,262.94
  5. Step 5: Solve for x
    x = 195,455,926,262.94/508,166.47
  6. Step 6: Final answer
    x = 384,629.72

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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.