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Finding the Fourth Proportional to 317,091.77, 437,332.53 and 278,769.86

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Solution

The fourth proportional to 317,091.77, 437,332.53 and 278,769.86 is: 384,479.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,091.77 : 437,332.53 = 278,769.86 : x
  2. Step 2: Convert to fraction form
    317,091.77/437,332.53 = 278,769.86/x
  3. Step 3: Cross multiply
    317,091.77x = 437,332.53 × 278,769.86
  4. Step 4: Simplify right side
    317,091.77x = 121,915,128,161.55
  5. Step 5: Solve for x
    x = 121,915,128,161.55/317,091.77
  6. Step 6: Final answer
    x = 384,479.00

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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.