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Finding the Fourth Proportional to 270,600.40, 405,892.23 and 128,547.92

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Solution

The fourth proportional to 270,600.40, 405,892.23 and 128,547.92 is: 192,817.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,600.40 : 405,892.23 = 128,547.92 : x
  2. Step 2: Convert to fraction form
    270,600.40/405,892.23 = 128,547.92/x
  3. Step 3: Cross multiply
    270,600.40x = 405,892.23 × 128,547.92
  4. Step 4: Simplify right side
    270,600.40x = 52,176,601,910.66
  5. Step 5: Solve for x
    x = 52,176,601,910.66/270,600.40
  6. Step 6: Final answer
    x = 192,817.90

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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.