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Finding the Fourth Proportional to 268,296.80, 402,445.20 and 162,008.60

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Solution

The fourth proportional to 268,296.80, 402,445.20 and 162,008.60 is: 243,012.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,296.80 : 402,445.20 = 162,008.60 : x
  2. Step 2: Convert to fraction form
    268,296.80/402,445.20 = 162,008.60/x
  3. Step 3: Cross multiply
    268,296.80x = 402,445.20 × 162,008.60
  4. Step 4: Simplify right side
    268,296.80x = 65,199,583,428.72
  5. Step 5: Solve for x
    x = 65,199,583,428.72/268,296.80
  6. Step 6: Final answer
    x = 243,012.90

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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.