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Finding the Fourth Proportional to 218,563,913.16, 327,809,959.02 and 78,475,370.52

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Solution

The fourth proportional to 218,563,913.16, 327,809,959.02 and 78,475,370.52 is: 117,700,162.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,563,913.16 : 327,809,959.02 = 78,475,370.52 : x
  2. Step 2: Convert to fraction form
    218,563,913.16/327,809,959.02 = 78,475,370.52/x
  3. Step 3: Cross multiply
    218,563,913.16x = 327,809,959.02 × 78,475,370.52
  4. Step 4: Simplify right side
    218,563,913.16x = 25,725,007,994,240,512
  5. Step 5: Solve for x
    x = 25,725,007,994,240,512/218,563,913.16
  6. Step 6: Final answer
    x = 117,700,162.04

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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.