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Finding the Fourth Proportional to 236,639,881.80, 354,978,146.52 and 79,073,442.72

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Solution

The fourth proportional to 236,639,881.80, 354,978,146.52 and 79,073,442.72 is: 118,616,287.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,639,881.80 : 354,978,146.52 = 79,073,442.72 : x
  2. Step 2: Convert to fraction form
    236,639,881.80/354,978,146.52 = 79,073,442.72/x
  3. Step 3: Cross multiply
    236,639,881.80x = 354,978,146.52 × 79,073,442.72
  4. Step 4: Simplify right side
    236,639,881.80x = 28,069,344,135,700,984
  5. Step 5: Solve for x
    x = 28,069,344,135,700,984/236,639,881.80
  6. Step 6: Final answer
    x = 118,616,287.00

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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.