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Finding the Fourth Proportional to 484,971.80, 727,112.10 and 218,514.20

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Solution

The fourth proportional to 484,971.80, 727,112.10 and 218,514.20 is: 327,615.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,971.80 : 727,112.10 = 218,514.20 : x
  2. Step 2: Convert to fraction form
    484,971.80/727,112.10 = 218,514.20/x
  3. Step 3: Cross multiply
    484,971.80x = 727,112.10 × 218,514.20
  4. Step 4: Simplify right side
    484,971.80x = 158,884,318,841.82
  5. Step 5: Solve for x
    x = 158,884,318,841.82/484,971.80
  6. Step 6: Final answer
    x = 327,615.58

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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.