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Finding the Fourth Proportional to 345,992.40, 519,409.80 and 219,632.40

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Solution

The fourth proportional to 345,992.40, 519,409.80 and 219,632.40 is: 329,715.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,992.40 : 519,409.80 = 219,632.40 : x
  2. Step 2: Convert to fraction form
    345,992.40/519,409.80 = 219,632.40/x
  3. Step 3: Cross multiply
    345,992.40x = 519,409.80 × 219,632.40
  4. Step 4: Simplify right side
    345,992.40x = 114,079,220,957.52
  5. Step 5: Solve for x
    x = 114,079,220,957.52/345,992.40
  6. Step 6: Final answer
    x = 329,715.97

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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.