Home / 427,815.60-641,723.40-112,304.40

Finding the Fourth Proportional to 427,815.60, 641,723.40 and 112,304.40

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Solution

The fourth proportional to 427,815.60, 641,723.40 and 112,304.40 is: 168,456.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,815.60 : 641,723.40 = 112,304.40 : x
  2. Step 2: Convert to fraction form
    427,815.60/641,723.40 = 112,304.40/x
  3. Step 3: Cross multiply
    427,815.60x = 641,723.40 × 112,304.40
  4. Step 4: Simplify right side
    427,815.60x = 72,068,361,402.96
  5. Step 5: Solve for x
    x = 72,068,361,402.96/427,815.60
  6. Step 6: Final answer
    x = 168,456.60

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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.