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Finding the Fourth Proportional to 251,314.68, 346,835.34 and 138,158.76

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Solution

The fourth proportional to 251,314.68, 346,835.34 and 138,158.76 is: 190,670.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,314.68 : 346,835.34 = 138,158.76 : x
  2. Step 2: Convert to fraction form
    251,314.68/346,835.34 = 138,158.76/x
  3. Step 3: Cross multiply
    251,314.68x = 346,835.34 × 138,158.76
  4. Step 4: Simplify right side
    251,314.68x = 47,918,340,498.58
  5. Step 5: Solve for x
    x = 47,918,340,498.58/251,314.68
  6. Step 6: Final answer
    x = 190,670.68

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1.5x scale

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.