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Finding the Fourth Proportional to 321,793,957.60, 482,942,878.80 and 149,292,145.60

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Solution

The fourth proportional to 321,793,957.60, 482,942,878.80 and 149,292,145.60 is: 224,055,103.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,793,957.60 : 482,942,878.80 = 149,292,145.60 : x
  2. Step 2: Convert to fraction form
    321,793,957.60/482,942,878.80 = 149,292,145.60/x
  3. Step 3: Cross multiply
    321,793,957.60x = 482,942,878.80 × 149,292,145.60
  4. Step 4: Simplify right side
    321,793,957.60x = 72,099,578,578,292,752
  5. Step 5: Solve for x
    x = 72,099,578,578,292,752/321,793,957.60
  6. Step 6: Final answer
    x = 224,055,103.82

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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.