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Finding the Fourth Proportional to 310,877.45, 428,980.25 and 174,908.39

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Solution

The fourth proportional to 310,877.45, 428,980.25 and 174,908.39 is: 241,356.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,877.45 : 428,980.25 = 174,908.39 : x
  2. Step 2: Convert to fraction form
    310,877.45/428,980.25 = 174,908.39/x
  3. Step 3: Cross multiply
    310,877.45x = 428,980.25 × 174,908.39
  4. Step 4: Simplify right side
    310,877.45x = 75,032,245,723.11
  5. Step 5: Solve for x
    x = 75,032,245,723.11/310,877.45
  6. Step 6: Final answer
    x = 241,356.35

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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.