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Finding the Fourth Proportional to 309,396.95, 464,095.79 and 84,759.32

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Solution

The fourth proportional to 309,396.95, 464,095.79 and 84,759.32 is: 127,139.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,396.95 : 464,095.79 = 84,759.32 : x
  2. Step 2: Convert to fraction form
    309,396.95/464,095.79 = 84,759.32/x
  3. Step 3: Cross multiply
    309,396.95x = 464,095.79 × 84,759.32
  4. Step 4: Simplify right side
    309,396.95x = 39,336,440,830.99
  5. Step 5: Solve for x
    x = 39,336,440,830.99/309,396.95
  6. Step 6: Final answer
    x = 127,139.07

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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.