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Finding the Fourth Proportional to 357,942.80, 536,901.82 and 91,705.92

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Solution

The fourth proportional to 357,942.80, 536,901.82 and 91,705.92 is: 137,555.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,942.80 : 536,901.82 = 91,705.92 : x
  2. Step 2: Convert to fraction form
    357,942.80/536,901.82 = 91,705.92/x
  3. Step 3: Cross multiply
    357,942.80x = 536,901.82 × 91,705.92
  4. Step 4: Simplify right side
    357,942.80x = 49,237,075,352.77
  5. Step 5: Solve for x
    x = 49,237,075,352.77/357,942.80
  6. Step 6: Final answer
    x = 137,555.71

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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.