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Finding the Fourth Proportional to 357,539.92, 536,309.80 and 91,290.92

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Solution

The fourth proportional to 357,539.92, 536,309.80 and 91,290.92 is: 136,936.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,539.92 : 536,309.80 = 91,290.92 : x
  2. Step 2: Convert to fraction form
    357,539.92/536,309.80 = 91,290.92/x
  3. Step 3: Cross multiply
    357,539.92x = 536,309.80 × 91,290.92
  4. Step 4: Simplify right side
    357,539.92x = 48,960,215,047.02
  5. Step 5: Solve for x
    x = 48,960,215,047.02/357,539.92
  6. Step 6: Final answer
    x = 136,936.36

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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.