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Finding the Fourth Proportional to 310,272.06, 428,128.80 and 174,279.96

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Solution

The fourth proportional to 310,272.06, 428,128.80 and 174,279.96 is: 240,480.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,272.06 : 428,128.80 = 174,279.96 : x
  2. Step 2: Convert to fraction form
    310,272.06/428,128.80 = 174,279.96/x
  3. Step 3: Cross multiply
    310,272.06x = 428,128.80 × 174,279.96
  4. Step 4: Simplify right side
    310,272.06x = 74,614,270,138.85
  5. Step 5: Solve for x
    x = 74,614,270,138.85/310,272.06
  6. Step 6: Final answer
    x = 240,480.15

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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.