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Finding the Fourth Proportional to 235,296.69, 324,756.54 and 139,784.91

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Solution

The fourth proportional to 235,296.69, 324,756.54 and 139,784.91 is: 192,931.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,296.69 : 324,756.54 = 139,784.91 : x
  2. Step 2: Convert to fraction form
    235,296.69/324,756.54 = 139,784.91/x
  3. Step 3: Cross multiply
    235,296.69x = 324,756.54 × 139,784.91
  4. Step 4: Simplify right side
    235,296.69x = 45,396,063,715.81
  5. Step 5: Solve for x
    x = 45,396,063,715.81/235,296.69
  6. Step 6: Final answer
    x = 192,931.16

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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.