Home / 309,839.12-464,702.76-82,136.24

Finding the Fourth Proportional to 309,839.12, 464,702.76 and 82,136.24

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Solution

The fourth proportional to 309,839.12, 464,702.76 and 82,136.24 is: 123,189.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,839.12 : 464,702.76 = 82,136.24 : x
  2. Step 2: Convert to fraction form
    309,839.12/464,702.76 = 82,136.24/x
  3. Step 3: Cross multiply
    309,839.12x = 464,702.76 × 82,136.24
  4. Step 4: Simplify right side
    309,839.12x = 38,168,937,424.02
  5. Step 5: Solve for x
    x = 38,168,937,424.02/309,839.12
  6. Step 6: Final answer
    x = 123,189.54

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1.5x scale

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.