Home / 224,403.81-309,704.64-128,910.27

Finding the Fourth Proportional to 224,403.81, 309,704.64 and 128,910.27

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Solution

The fourth proportional to 224,403.81, 309,704.64 and 128,910.27 is: 177,911.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    224,403.81 : 309,704.64 = 128,910.27 : x
  2. Step 2: Convert to fraction form
    224,403.81/309,704.64 = 128,910.27/x
  3. Step 3: Cross multiply
    224,403.81x = 309,704.64 × 128,910.27
  4. Step 4: Simplify right side
    224,403.81x = 39,924,108,762.65
  5. Step 5: Solve for x
    x = 39,924,108,762.65/224,403.81
  6. Step 6: Final answer
    x = 177,911.90

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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.