Home / 431,177,429.10-646,860,622.05-139,995,000.30

Finding the Fourth Proportional to 431,177,429.10, 646,860,622.05 and 139,995,000.30

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Solution

The fourth proportional to 431,177,429.10, 646,860,622.05 and 139,995,000.30 is: 210,023,175.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,177,429.10 : 646,860,622.05 = 139,995,000.30 : x
  2. Step 2: Convert to fraction form
    431,177,429.10/646,860,622.05 = 139,995,000.30/x
  3. Step 3: Cross multiply
    431,177,429.10x = 646,860,622.05 × 139,995,000.30
  4. Step 4: Simplify right side
    431,177,429.10x = 90,557,252,977,947,936
  5. Step 5: Solve for x
    x = 90,557,252,977,947,936/431,177,429.10
  6. Step 6: Final answer
    x = 210,023,175.77

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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.