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Finding the Fourth Proportional to 251,424.32, 346,966.96 and 138,254.40

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Solution

The fourth proportional to 251,424.32, 346,966.96 and 138,254.40 is: 190,791.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,424.32 : 346,966.96 = 138,254.40 : x
  2. Step 2: Convert to fraction form
    251,424.32/346,966.96 = 138,254.40/x
  3. Step 3: Cross multiply
    251,424.32x = 346,966.96 × 138,254.40
  4. Step 4: Simplify right side
    251,424.32x = 47,969,708,874.62
  5. Step 5: Solve for x
    x = 47,969,708,874.62/251,424.32
  6. Step 6: Final answer
    x = 190,791.84

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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.