Home / 431,208,000.20-646,812,000.30-172,295,193.80

Finding the Fourth Proportional to 431,208,000.20, 646,812,000.30 and 172,295,193.80

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Solution

The fourth proportional to 431,208,000.20, 646,812,000.30 and 172,295,193.80 is: 258,442,790.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,208,000.20 : 646,812,000.30 = 172,295,193.80 : x
  2. Step 2: Convert to fraction form
    431,208,000.20/646,812,000.30 = 172,295,193.80/x
  3. Step 3: Cross multiply
    431,208,000.20x = 646,812,000.30 × 172,295,193.80
  4. Step 4: Simplify right side
    431,208,000.20x = 111,442,598,943,854,160
  5. Step 5: Solve for x
    x = 111,442,598,943,854,160/431,208,000.20
  6. Step 6: Final answer
    x = 258,442,790.70

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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.