Home / 440,128.85-660,438.52-237,720.86

Finding the Fourth Proportional to 440,128.85, 660,438.52 and 237,720.86

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Solution

The fourth proportional to 440,128.85, 660,438.52 and 237,720.86 is: 356,713.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,128.85 : 660,438.52 = 237,720.86 : x
  2. Step 2: Convert to fraction form
    440,128.85/660,438.52 = 237,720.86/x
  3. Step 3: Cross multiply
    440,128.85x = 660,438.52 × 237,720.86
  4. Step 4: Simplify right side
    440,128.85x = 157,000,014,485.04
  5. Step 5: Solve for x
    x = 157,000,014,485.04/440,128.85
  6. Step 6: Final answer
    x = 356,713.75

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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.