Home / 309,702.20-464,239.55-209,872.49

Finding the Fourth Proportional to 309,702.20, 464,239.55 and 209,872.49

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Solution

The fourth proportional to 309,702.20, 464,239.55 and 209,872.49 is: 314,596.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,702.20 : 464,239.55 = 209,872.49 : x
  2. Step 2: Convert to fraction form
    309,702.20/464,239.55 = 209,872.49/x
  3. Step 3: Cross multiply
    309,702.20x = 464,239.55 × 209,872.49
  4. Step 4: Simplify right side
    309,702.20x = 97,431,108,518.46
  5. Step 5: Solve for x
    x = 97,431,108,518.46/309,702.20
  6. Step 6: Final answer
    x = 314,596.12

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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.