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Finding the Fourth Proportional to 310,818.17, 428,928.44 and 174,852.21

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Solution

The fourth proportional to 310,818.17, 428,928.44 and 174,852.21 is: 241,295.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,818.17 : 428,928.44 = 174,852.21 : x
  2. Step 2: Convert to fraction form
    310,818.17/428,928.44 = 174,852.21/x
  3. Step 3: Cross multiply
    310,818.17x = 428,928.44 × 174,852.21
  4. Step 4: Simplify right side
    310,818.17x = 74,999,084,791.59
  5. Step 5: Solve for x
    x = 74,999,084,791.59/310,818.17
  6. Step 6: Final answer
    x = 241,295.69

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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.