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Finding the Fourth Proportional to 219,366.96, 302,831.64 and 138,833.52

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Solution

The fourth proportional to 219,366.96, 302,831.64 and 138,833.52 is: 191,656.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,366.96 : 302,831.64 = 138,833.52 : x
  2. Step 2: Convert to fraction form
    219,366.96/302,831.64 = 138,833.52/x
  3. Step 3: Cross multiply
    219,366.96x = 302,831.64 × 138,833.52
  4. Step 4: Simplify right side
    219,366.96x = 42,043,182,548.57
  5. Step 5: Solve for x
    x = 42,043,182,548.57/219,366.96
  6. Step 6: Final answer
    x = 191,656.86

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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.