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Finding the Fourth Proportional to 363,998,977.20, 545,998,465.80 and 145,683,014.40

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Solution

The fourth proportional to 363,998,977.20, 545,998,465.80 and 145,683,014.40 is: 218,524,521.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,998,977.20 : 545,998,465.80 = 145,683,014.40 : x
  2. Step 2: Convert to fraction form
    363,998,977.20/545,998,465.80 = 145,683,014.40/x
  3. Step 3: Cross multiply
    363,998,977.20x = 545,998,465.80 × 145,683,014.40
  4. Step 4: Simplify right side
    363,998,977.20x = 79,542,702,355,519,296
  5. Step 5: Solve for x
    x = 79,542,702,355,519,296/363,998,977.20
  6. Step 6: Final answer
    x = 218,524,521.60

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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.