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Finding the Fourth Proportional to 251,452.83, 346,995.86 and 138,274.77

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Solution

The fourth proportional to 251,452.83, 346,995.86 and 138,274.77 is: 190,814.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,452.83 : 346,995.86 = 138,274.77 : x
  2. Step 2: Convert to fraction form
    251,452.83/346,995.86 = 138,274.77/x
  3. Step 3: Cross multiply
    251,452.83x = 346,995.86 × 138,274.77
  4. Step 4: Simplify right side
    251,452.83x = 47,980,772,041.08
  5. Step 5: Solve for x
    x = 47,980,772,041.08/251,452.83
  6. Step 6: Final answer
    x = 190,814.21

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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.