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Finding the Fourth Proportional to 357,965.36, 536,612.68 and 121,142.24

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Solution

The fourth proportional to 357,965.36, 536,612.68 and 121,142.24 is: 181,599.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,965.36 : 536,612.68 = 121,142.24 : x
  2. Step 2: Convert to fraction form
    357,965.36/536,612.68 = 121,142.24/x
  3. Step 3: Cross multiply
    357,965.36x = 536,612.68 × 121,142.24
  4. Step 4: Simplify right side
    357,965.36x = 65,006,462,067.60
  5. Step 5: Solve for x
    x = 65,006,462,067.60/357,965.36
  6. Step 6: Final answer
    x = 181,599.87

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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.