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Finding the Fourth Proportional to 310,616.51, 428,646.06 and 174,650.72

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Solution

The fourth proportional to 310,616.51, 428,646.06 and 174,650.72 is: 241,015.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,616.51 : 428,646.06 = 174,650.72 : x
  2. Step 2: Convert to fraction form
    310,616.51/428,646.06 = 174,650.72/x
  3. Step 3: Cross multiply
    310,616.51x = 428,646.06 × 174,650.72
  4. Step 4: Simplify right side
    310,616.51x = 74,863,340,860.93
  5. Step 5: Solve for x
    x = 74,863,340,860.93/310,616.51
  6. Step 6: Final answer
    x = 241,015.33

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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.