Home / 330,742.10-456,448.56-187,515.20

Finding the Fourth Proportional to 330,742.10, 456,448.56 and 187,515.20

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Solution

The fourth proportional to 330,742.10, 456,448.56 and 187,515.20 is: 258,784.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,742.10 : 456,448.56 = 187,515.20 : x
  2. Step 2: Convert to fraction form
    330,742.10/456,448.56 = 187,515.20/x
  3. Step 3: Cross multiply
    330,742.10x = 456,448.56 × 187,515.20
  4. Step 4: Simplify right side
    330,742.10x = 85,591,043,018.11
  5. Step 5: Solve for x
    x = 85,591,043,018.11/330,742.10
  6. Step 6: Final answer
    x = 258,784.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.