Home / 310,741.12-428,558.16-262,578.40

Finding the Fourth Proportional to 310,741.12, 428,558.16 and 262,578.40

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Solution

The fourth proportional to 310,741.12, 428,558.16 and 262,578.40 is: 362,134.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,741.12 : 428,558.16 = 262,578.40 : x
  2. Step 2: Convert to fraction form
    310,741.12/428,558.16 = 262,578.40/x
  3. Step 3: Cross multiply
    310,741.12x = 428,558.16 × 262,578.40
  4. Step 4: Simplify right side
    310,741.12x = 112,530,115,959.74
  5. Step 5: Solve for x
    x = 112,530,115,959.74/310,741.12
  6. Step 6: Final answer
    x = 362,134.62

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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.