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Finding the Fourth Proportional to 402,172.56, 554,743.08 and 247,055.94

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Solution

The fourth proportional to 402,172.56, 554,743.08 and 247,055.94 is: 340,780.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,172.56 : 554,743.08 = 247,055.94 : x
  2. Step 2: Convert to fraction form
    402,172.56/554,743.08 = 247,055.94/x
  3. Step 3: Cross multiply
    402,172.56x = 554,743.08 × 247,055.94
  4. Step 4: Simplify right side
    402,172.56x = 137,052,573,087.90
  5. Step 5: Solve for x
    x = 137,052,573,087.90/402,172.56
  6. Step 6: Final answer
    x = 340,780.52

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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.