Home / 321,116.18-442,720.23-276,275.84

Finding the Fourth Proportional to 321,116.18, 442,720.23 and 276,275.84

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Solution

The fourth proportional to 321,116.18, 442,720.23 and 276,275.84 is: 380,899.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,116.18 : 442,720.23 = 276,275.84 : x
  2. Step 2: Convert to fraction form
    321,116.18/442,720.23 = 276,275.84/x
  3. Step 3: Cross multiply
    321,116.18x = 442,720.23 × 276,275.84
  4. Step 4: Simplify right side
    321,116.18x = 122,312,901,214.64
  5. Step 5: Solve for x
    x = 122,312,901,214.64/321,116.18
  6. Step 6: Final answer
    x = 380,899.22

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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.