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Finding the Fourth Proportional to 357,536.94, 536,305.32 and 91,287.90

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Solution

The fourth proportional to 357,536.94, 536,305.32 and 91,287.90 is: 136,931.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,536.94 : 536,305.32 = 91,287.90 : x
  2. Step 2: Convert to fraction form
    357,536.94/536,305.32 = 91,287.90/x
  3. Step 3: Cross multiply
    357,536.94x = 536,305.32 × 91,287.90
  4. Step 4: Simplify right side
    357,536.94x = 48,958,186,421.63
  5. Step 5: Solve for x
    x = 48,958,186,421.63/357,536.94
  6. Step 6: Final answer
    x = 136,931.83

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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.