Home / 309,823.80-464,735.70-291,161.40

Finding the Fourth Proportional to 309,823.80, 464,735.70 and 291,161.40

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Solution

The fourth proportional to 309,823.80, 464,735.70 and 291,161.40 is: 436,742.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,823.80 : 464,735.70 = 291,161.40 : x
  2. Step 2: Convert to fraction form
    309,823.80/464,735.70 = 291,161.40/x
  3. Step 3: Cross multiply
    309,823.80x = 464,735.70 × 291,161.40
  4. Step 4: Simplify right side
    309,823.80x = 135,313,097,041.98
  5. Step 5: Solve for x
    x = 135,313,097,041.98/309,823.80
  6. Step 6: Final answer
    x = 436,742.10

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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.