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Finding the Fourth Proportional to 235,425.60, 353,138.40 and 155,709.45

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Solution

The fourth proportional to 235,425.60, 353,138.40 and 155,709.45 is: 233,564.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,425.60 : 353,138.40 = 155,709.45 : x
  2. Step 2: Convert to fraction form
    235,425.60/353,138.40 = 155,709.45/x
  3. Step 3: Cross multiply
    235,425.60x = 353,138.40 × 155,709.45
  4. Step 4: Simplify right side
    235,425.60x = 54,986,986,037.88
  5. Step 5: Solve for x
    x = 54,986,986,037.88/235,425.60
  6. Step 6: Final answer
    x = 233,564.18

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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.