Home / 251,451.12-347,011.80-138,284.40

Finding the Fourth Proportional to 251,451.12, 347,011.80 and 138,284.40

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Solution

The fourth proportional to 251,451.12, 347,011.80 and 138,284.40 is: 190,837.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,451.12 : 347,011.80 = 138,284.40 : x
  2. Step 2: Convert to fraction form
    251,451.12/347,011.80 = 138,284.40/x
  3. Step 3: Cross multiply
    251,451.12x = 347,011.80 × 138,284.40
  4. Step 4: Simplify right side
    251,451.12x = 47,986,318,555.92
  5. Step 5: Solve for x
    x = 47,986,318,555.92/251,451.12
  6. Step 6: Final answer
    x = 190,837.56

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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.