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Finding the Fourth Proportional to 357,398.78, 536,116.62 and 91,161.62

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Solution

The fourth proportional to 357,398.78, 536,116.62 and 91,161.62 is: 136,747.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,398.78 : 536,116.62 = 91,161.62 : x
  2. Step 2: Convert to fraction form
    357,398.78/536,116.62 = 91,161.62/x
  3. Step 3: Cross multiply
    357,398.78x = 536,116.62 × 91,161.62
  4. Step 4: Simplify right side
    357,398.78x = 48,873,259,588.12
  5. Step 5: Solve for x
    x = 48,873,259,588.12/357,398.78
  6. Step 6: Final answer
    x = 136,747.14

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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.