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Finding the Fourth Proportional to 251,199.04, 346,656.16 and 138,018.88

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Solution

The fourth proportional to 251,199.04, 346,656.16 and 138,018.88 is: 190,466.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,199.04 : 346,656.16 = 138,018.88 : x
  2. Step 2: Convert to fraction form
    251,199.04/346,656.16 = 138,018.88/x
  3. Step 3: Cross multiply
    251,199.04x = 346,656.16 × 138,018.88
  4. Step 4: Simplify right side
    251,199.04x = 47,845,094,948.30
  5. Step 5: Solve for x
    x = 47,845,094,948.30/251,199.04
  6. Step 6: Final answer
    x = 190,466.87

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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.