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Finding the Fourth Proportional to 268,291.40, 402,437.10 and 162,003.20

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Solution

The fourth proportional to 268,291.40, 402,437.10 and 162,003.20 is: 243,004.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,291.40 : 402,437.10 = 162,003.20 : x
  2. Step 2: Convert to fraction form
    268,291.40/402,437.10 = 162,003.20/x
  3. Step 3: Cross multiply
    268,291.40x = 402,437.10 × 162,003.20
  4. Step 4: Simplify right side
    268,291.40x = 65,196,097,998.72
  5. Step 5: Solve for x
    x = 65,196,097,998.72/268,291.40
  6. Step 6: Final answer
    x = 243,004.80

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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.