Home / 428,313.07-591,071.95-256,238.32

Finding the Fourth Proportional to 428,313.07, 591,071.95 and 256,238.32

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Solution

The fourth proportional to 428,313.07, 591,071.95 and 256,238.32 is: 353,608.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,313.07 : 591,071.95 = 256,238.32 : x
  2. Step 2: Convert to fraction form
    428,313.07/591,071.95 = 256,238.32/x
  3. Step 3: Cross multiply
    428,313.07x = 591,071.95 × 256,238.32
  4. Step 4: Simplify right side
    428,313.07x = 151,455,283,467.12
  5. Step 5: Solve for x
    x = 151,455,283,467.12/428,313.07
  6. Step 6: Final answer
    x = 353,608.83

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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.