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Finding the Fourth Proportional to 436,939.20, 655,430.40 and 226,987.20

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Solution

The fourth proportional to 436,939.20, 655,430.40 and 226,987.20 is: 340,492.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,939.20 : 655,430.40 = 226,987.20 : x
  2. Step 2: Convert to fraction form
    436,939.20/655,430.40 = 226,987.20/x
  3. Step 3: Cross multiply
    436,939.20x = 655,430.40 × 226,987.20
  4. Step 4: Simplify right side
    436,939.20x = 148,774,311,290.88
  5. Step 5: Solve for x
    x = 148,774,311,290.88/436,939.20
  6. Step 6: Final answer
    x = 340,492.02

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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.