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Finding the Fourth Proportional to 310,426.02, 428,504.93 and 181,406.39

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Solution

The fourth proportional to 310,426.02, 428,504.93 and 181,406.39 is: 250,409.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,426.02 : 428,504.93 = 181,406.39 : x
  2. Step 2: Convert to fraction form
    310,426.02/428,504.93 = 181,406.39/x
  3. Step 3: Cross multiply
    310,426.02x = 428,504.93 × 181,406.39
  4. Step 4: Simplify right side
    310,426.02x = 77,733,531,099.63
  5. Step 5: Solve for x
    x = 77,733,531,099.63/310,426.02
  6. Step 6: Final answer
    x = 250,409.20

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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.