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Finding the Fourth Proportional to 321,830,943.60, 482,746,415.40 and 79,493,847.60

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Solution

The fourth proportional to 321,830,943.60, 482,746,415.40 and 79,493,847.60 is: 119,240,771.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,830,943.60 : 482,746,415.40 = 79,493,847.60 : x
  2. Step 2: Convert to fraction form
    321,830,943.60/482,746,415.40 = 79,493,847.60/x
  3. Step 3: Cross multiply
    321,830,943.60x = 482,746,415.40 × 79,493,847.60
  4. Step 4: Simplify right side
    321,830,943.60x = 38,375,369,975,253,888
  5. Step 5: Solve for x
    x = 38,375,369,975,253,888/321,830,943.60
  6. Step 6: Final answer
    x = 119,240,771.40

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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.