Home / 421,801,356.15-632,704,137.80-172,942,543.02

Finding the Fourth Proportional to 421,801,356.15, 632,704,137.80 and 172,942,543.02

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Solution

The fourth proportional to 421,801,356.15, 632,704,137.80 and 172,942,543.02 is: 259,414,677.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,801,356.15 : 632,704,137.80 = 172,942,543.02 : x
  2. Step 2: Convert to fraction form
    421,801,356.15/632,704,137.80 = 172,942,543.02/x
  3. Step 3: Cross multiply
    421,801,356.15x = 632,704,137.80 × 172,942,543.02
  4. Step 4: Simplify right side
    421,801,356.15x = 109,421,462,571,916,432
  5. Step 5: Solve for x
    x = 109,421,462,571,916,432/421,801,356.15
  6. Step 6: Final answer
    x = 259,414,677.02

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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.