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Finding the Fourth Proportional to 235,480.64, 353,934.63 and 155,790.45

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Solution

The fourth proportional to 235,480.64, 353,934.63 and 155,790.45 is: 234,157.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,480.64 : 353,934.63 = 155,790.45 : x
  2. Step 2: Convert to fraction form
    235,480.64/353,934.63 = 155,790.45/x
  3. Step 3: Cross multiply
    235,480.64x = 353,934.63 × 155,790.45
  4. Step 4: Simplify right side
    235,480.64x = 55,139,635,278.28
  5. Step 5: Solve for x
    x = 55,139,635,278.28/235,480.64
  6. Step 6: Final answer
    x = 234,157.83

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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.