Home / 309,496.14-464,088.69-143,400.78

Finding the Fourth Proportional to 309,496.14, 464,088.69 and 143,400.78

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Solution

The fourth proportional to 309,496.14, 464,088.69 and 143,400.78 is: 215,029.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,496.14 : 464,088.69 = 143,400.78 : x
  2. Step 2: Convert to fraction form
    309,496.14/464,088.69 = 143,400.78/x
  3. Step 3: Cross multiply
    309,496.14x = 464,088.69 × 143,400.78
  4. Step 4: Simplify right side
    309,496.14x = 66,550,680,135.18
  5. Step 5: Solve for x
    x = 66,550,680,135.18/309,496.14
  6. Step 6: Final answer
    x = 215,029.11

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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.