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Finding the Fourth Proportional to 251,259.22, 346,597.36 and 154,395.78

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Solution

The fourth proportional to 251,259.22, 346,597.36 and 154,395.78 is: 212,979.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,259.22 : 346,597.36 = 154,395.78 : x
  2. Step 2: Convert to fraction form
    251,259.22/346,597.36 = 154,395.78/x
  3. Step 3: Cross multiply
    251,259.22x = 346,597.36 × 154,395.78
  4. Step 4: Simplify right side
    251,259.22x = 53,513,169,743.14
  5. Step 5: Solve for x
    x = 53,513,169,743.14/251,259.22
  6. Step 6: Final answer
    x = 212,979.92

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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.