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Finding the Fourth Proportional to 288,639,764.64, 398,325,996.54 and 169,567,375.95

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Solution

The fourth proportional to 288,639,764.64, 398,325,996.54 and 169,567,375.95 is: 234,004,812.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,639,764.64 : 398,325,996.54 = 169,567,375.95 : x
  2. Step 2: Convert to fraction form
    288,639,764.64/398,325,996.54 = 169,567,375.95/x
  3. Step 3: Cross multiply
    288,639,764.64x = 398,325,996.54 × 169,567,375.95
  4. Step 4: Simplify right side
    288,639,764.64x = 67,543,094,005,956,576
  5. Step 5: Solve for x
    x = 67,543,094,005,956,576/288,639,764.64
  6. Step 6: Final answer
    x = 234,004,812.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.