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Finding the Fourth Proportional to 479,673.80, 719,316.30 and 163,968.20

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Solution

The fourth proportional to 479,673.80, 719,316.30 and 163,968.20 is: 245,885.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,673.80 : 719,316.30 = 163,968.20 : x
  2. Step 2: Convert to fraction form
    479,673.80/719,316.30 = 163,968.20/x
  3. Step 3: Cross multiply
    479,673.80x = 719,316.30 × 163,968.20
  4. Step 4: Simplify right side
    479,673.80x = 117,944,998,941.66
  5. Step 5: Solve for x
    x = 117,944,998,941.66/479,673.80
  6. Step 6: Final answer
    x = 245,885.85

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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.