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Finding the Fourth Proportional to 251,444.84, 346,979.40 and 138,267.68

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Solution

The fourth proportional to 251,444.84, 346,979.40 and 138,267.68 is: 190,801.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,444.84 : 346,979.40 = 138,267.68 : x
  2. Step 2: Convert to fraction form
    251,444.84/346,979.40 = 138,267.68/x
  3. Step 3: Cross multiply
    251,444.84x = 346,979.40 × 138,267.68
  4. Step 4: Simplify right side
    251,444.84x = 47,976,036,645.79
  5. Step 5: Solve for x
    x = 47,976,036,645.79/251,444.84
  6. Step 6: Final answer
    x = 190,801.44

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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.