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Finding the Fourth Proportional to 361,903.60, 542,855.40 and 162,011.80

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Solution

The fourth proportional to 361,903.60, 542,855.40 and 162,011.80 is: 243,017.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,903.60 : 542,855.40 = 162,011.80 : x
  2. Step 2: Convert to fraction form
    361,903.60/542,855.40 = 162,011.80/x
  3. Step 3: Cross multiply
    361,903.60x = 542,855.40 × 162,011.80
  4. Step 4: Simplify right side
    361,903.60x = 87,948,980,493.72
  5. Step 5: Solve for x
    x = 87,948,980,493.72/361,903.60
  6. Step 6: Final answer
    x = 243,017.70

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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.