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Finding the Fourth Proportional to 310,080.40, 427,905.50 and 174,115.42

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Solution

The fourth proportional to 310,080.40, 427,905.50 and 174,115.42 is: 240,276.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,080.40 : 427,905.50 = 174,115.42 : x
  2. Step 2: Convert to fraction form
    310,080.40/427,905.50 = 174,115.42/x
  3. Step 3: Cross multiply
    310,080.40x = 427,905.50 × 174,115.42
  4. Step 4: Simplify right side
    310,080.40x = 74,504,945,852.81
  5. Step 5: Solve for x
    x = 74,504,945,852.81/310,080.40
  6. Step 6: Final answer
    x = 240,276.22

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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.