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Finding the Fourth Proportional to 395,314.88, 545,313.21 and 234,012.74

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Solution

The fourth proportional to 395,314.88, 545,313.21 and 234,012.74 is: 322,806.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,314.88 : 545,313.21 = 234,012.74 : x
  2. Step 2: Convert to fraction form
    395,314.88/545,313.21 = 234,012.74/x
  3. Step 3: Cross multiply
    395,314.88x = 545,313.21 × 234,012.74
  4. Step 4: Simplify right side
    395,314.88x = 127,610,238,430.30
  5. Step 5: Solve for x
    x = 127,610,238,430.30/395,314.88
  6. Step 6: Final answer
    x = 322,806.56

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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.