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Finding the Fourth Proportional to 355,767.40, 533,722.52 and 131,128.93

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Solution

The fourth proportional to 355,767.40, 533,722.52 and 131,128.93 is: 196,719.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,767.40 : 533,722.52 = 131,128.93 : x
  2. Step 2: Convert to fraction form
    355,767.40/533,722.52 = 131,128.93/x
  3. Step 3: Cross multiply
    355,767.40x = 533,722.52 × 131,128.93
  4. Step 4: Simplify right side
    355,767.40x = 69,986,462,964.50
  5. Step 5: Solve for x
    x = 69,986,462,964.50/355,767.40
  6. Step 6: Final answer
    x = 196,719.72

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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.