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Finding the Fourth Proportional to 327,130.80, 490,331.70 and 127,384.80

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Solution

The fourth proportional to 327,130.80, 490,331.70 and 127,384.80 is: 190,935.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,130.80 : 490,331.70 = 127,384.80 : x
  2. Step 2: Convert to fraction form
    327,130.80/490,331.70 = 127,384.80/x
  3. Step 3: Cross multiply
    327,130.80x = 490,331.70 × 127,384.80
  4. Step 4: Simplify right side
    327,130.80x = 62,460,805,538.16
  5. Step 5: Solve for x
    x = 62,460,805,538.16/327,130.80
  6. Step 6: Final answer
    x = 190,935.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.