Home / 291,031.10-436,546.65-220,172.30

Finding the Fourth Proportional to 291,031.10, 436,546.65 and 220,172.30

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Solution

The fourth proportional to 291,031.10, 436,546.65 and 220,172.30 is: 330,258.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,031.10 : 436,546.65 = 220,172.30 : x
  2. Step 2: Convert to fraction form
    291,031.10/436,546.65 = 220,172.30/x
  3. Step 3: Cross multiply
    291,031.10x = 436,546.65 × 220,172.30
  4. Step 4: Simplify right side
    291,031.10x = 96,115,479,987.80
  5. Step 5: Solve for x
    x = 96,115,479,987.80/291,031.10
  6. Step 6: Final answer
    x = 330,258.45

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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.