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Finding the Fourth Proportional to 309,597.36, 464,396.55 and 84,960.87

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Solution

The fourth proportional to 309,597.36, 464,396.55 and 84,960.87 is: 127,441.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,597.36 : 464,396.55 = 84,960.87 : x
  2. Step 2: Convert to fraction form
    309,597.36/464,396.55 = 84,960.87/x
  3. Step 3: Cross multiply
    309,597.36x = 464,396.55 × 84,960.87
  4. Step 4: Simplify right side
    309,597.36x = 39,455,534,913.00
  5. Step 5: Solve for x
    x = 39,455,534,913.00/309,597.36
  6. Step 6: Final answer
    x = 127,441.44

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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.