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Finding the Fourth Proportional to 309,391.66, 464,087.88 and 84,754.07

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Solution

The fourth proportional to 309,391.66, 464,087.88 and 84,754.07 is: 127,131.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,391.66 : 464,087.88 = 84,754.07 : x
  2. Step 2: Convert to fraction form
    309,391.66/464,087.88 = 84,754.07/x
  3. Step 3: Cross multiply
    309,391.66x = 464,087.88 × 84,754.07
  4. Step 4: Simplify right side
    309,391.66x = 39,333,334,347.23
  5. Step 5: Solve for x
    x = 39,333,334,347.23/309,391.66
  6. Step 6: Final answer
    x = 127,131.21

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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.