Home / 309,821.10-464,139.21-209,488.83

Finding the Fourth Proportional to 309,821.10, 464,139.21 and 209,488.83

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Solution

The fourth proportional to 309,821.10, 464,139.21 and 209,488.83 is: 313,832.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,821.10 : 464,139.21 = 209,488.83 : x
  2. Step 2: Convert to fraction form
    309,821.10/464,139.21 = 209,488.83/x
  3. Step 3: Cross multiply
    309,821.10x = 464,139.21 × 209,488.83
  4. Step 4: Simplify right side
    309,821.10x = 97,231,980,060.02
  5. Step 5: Solve for x
    x = 97,231,980,060.02/309,821.10
  6. Step 6: Final answer
    x = 313,832.66

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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.