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Finding the Fourth Proportional to 321,602.04, 482,426.10 and 84,942.36

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Solution

The fourth proportional to 321,602.04, 482,426.10 and 84,942.36 is: 127,419.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,602.04 : 482,426.10 = 84,942.36 : x
  2. Step 2: Convert to fraction form
    321,602.04/482,426.10 = 84,942.36/x
  3. Step 3: Cross multiply
    321,602.04x = 482,426.10 × 84,942.36
  4. Step 4: Simplify right side
    321,602.04x = 40,978,411,459.60
  5. Step 5: Solve for x
    x = 40,978,411,459.60/321,602.04
  6. Step 6: Final answer
    x = 127,419.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.