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Finding the Fourth Proportional to 143,898.93, 215,831.79 and 38,709.63

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Solution

The fourth proportional to 143,898.93, 215,831.79 and 38,709.63 is: 58,059.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,898.93 : 215,831.79 = 38,709.63 : x
  2. Step 2: Convert to fraction form
    143,898.93/215,831.79 = 38,709.63/x
  3. Step 3: Cross multiply
    143,898.93x = 215,831.79 × 38,709.63
  4. Step 4: Simplify right side
    143,898.93x = 8,354,768,733.14
  5. Step 5: Solve for x
    x = 8,354,768,733.14/143,898.93
  6. Step 6: Final answer
    x = 58,059.98

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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.