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Finding the Fourth Proportional to 357,758.09, 536,655.51 and 91,520.91

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Solution

The fourth proportional to 357,758.09, 536,655.51 and 91,520.91 is: 137,286.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,758.09 : 536,655.51 = 91,520.91 : x
  2. Step 2: Convert to fraction form
    357,758.09/536,655.51 = 91,520.91/x
  3. Step 3: Cross multiply
    357,758.09x = 536,655.51 × 91,520.91
  4. Step 4: Simplify right side
    357,758.09x = 49,115,200,631.71
  5. Step 5: Solve for x
    x = 49,115,200,631.71/357,758.09
  6. Step 6: Final answer
    x = 137,286.07

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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.