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Finding the Fourth Proportional to 310,660.31, 428,657.77 and 174,675.39

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Solution

The fourth proportional to 310,660.31, 428,657.77 and 174,675.39 is: 241,021.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,660.31 : 428,657.77 = 174,675.39 : x
  2. Step 2: Convert to fraction form
    310,660.31/428,657.77 = 174,675.39/x
  3. Step 3: Cross multiply
    310,660.31x = 428,657.77 × 174,675.39
  4. Step 4: Simplify right side
    310,660.31x = 74,875,961,762.16
  5. Step 5: Solve for x
    x = 74,875,961,762.16/310,660.31
  6. Step 6: Final answer
    x = 241,021.97

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1.5x scale

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.