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Finding the Fourth Proportional to 310,232.85, 428,054.90 and 181,112.68

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Solution

The fourth proportional to 310,232.85, 428,054.90 and 181,112.68 is: 249,896.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,232.85 : 428,054.90 = 181,112.68 : x
  2. Step 2: Convert to fraction form
    310,232.85/428,054.90 = 181,112.68/x
  3. Step 3: Cross multiply
    310,232.85x = 428,054.90 × 181,112.68
  4. Step 4: Simplify right side
    310,232.85x = 77,526,170,126.13
  5. Step 5: Solve for x
    x = 77,526,170,126.13/310,232.85
  6. Step 6: Final answer
    x = 249,896.72

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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.