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Finding the Fourth Proportional to 485,399.59, 727,527.51 and 218,848.03

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Solution

The fourth proportional to 485,399.59, 727,527.51 and 218,848.03 is: 328,014.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,399.59 : 727,527.51 = 218,848.03 : x
  2. Step 2: Convert to fraction form
    485,399.59/727,527.51 = 218,848.03/x
  3. Step 3: Cross multiply
    485,399.59x = 727,527.51 × 218,848.03
  4. Step 4: Simplify right side
    485,399.59x = 159,217,958,696.67
  5. Step 5: Solve for x
    x = 159,217,958,696.67/485,399.59
  6. Step 6: Final answer
    x = 328,014.20

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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.