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Finding the Fourth Proportional to 251,315.68, 346,836.72 and 138,159.76

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Solution

The fourth proportional to 251,315.68, 346,836.72 and 138,159.76 is: 190,672.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,315.68 : 346,836.72 = 138,159.76 : x
  2. Step 2: Convert to fraction form
    251,315.68/346,836.72 = 138,159.76/x
  3. Step 3: Cross multiply
    251,315.68x = 346,836.72 × 138,159.76
  4. Step 4: Simplify right side
    251,315.68x = 47,918,877,994.39
  5. Step 5: Solve for x
    x = 47,918,877,994.39/251,315.68
  6. Step 6: Final answer
    x = 190,672.06

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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.