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Finding the Fourth Proportional to 270,090.46, 405,223.17 and 129,830.86

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Solution

The fourth proportional to 270,090.46, 405,223.17 and 129,830.86 is: 194,788.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,090.46 : 405,223.17 = 129,830.86 : x
  2. Step 2: Convert to fraction form
    270,090.46/405,223.17 = 129,830.86/x
  3. Step 3: Cross multiply
    270,090.46x = 405,223.17 × 129,830.86
  4. Step 4: Simplify right side
    270,090.46x = 52,610,472,653.03
  5. Step 5: Solve for x
    x = 52,610,472,653.03/270,090.46
  6. Step 6: Final answer
    x = 194,788.34

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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.