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Finding the Fourth Proportional to 380,713.16, 525,440.12 and 219,536.73

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Solution

The fourth proportional to 380,713.16, 525,440.12 and 219,536.73 is: 302,992.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,713.16 : 525,440.12 = 219,536.73 : x
  2. Step 2: Convert to fraction form
    380,713.16/525,440.12 = 219,536.73/x
  3. Step 3: Cross multiply
    380,713.16x = 525,440.12 × 219,536.73
  4. Step 4: Simplify right side
    380,713.16x = 115,353,404,657.92
  5. Step 5: Solve for x
    x = 115,353,404,657.92/380,713.16
  6. Step 6: Final answer
    x = 302,992.95

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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.