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Finding the Fourth Proportional to 357,457.77, 536,186.31 and 91,218.28

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Solution

The fourth proportional to 357,457.77, 536,186.31 and 91,218.28 is: 136,827.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,457.77 : 536,186.31 = 91,218.28 : x
  2. Step 2: Convert to fraction form
    357,457.77/536,186.31 = 91,218.28/x
  3. Step 3: Cross multiply
    357,457.77x = 536,186.31 × 91,218.28
  4. Step 4: Simplify right side
    357,457.77x = 48,909,992,957.75
  5. Step 5: Solve for x
    x = 48,909,992,957.75/357,457.77
  6. Step 6: Final answer
    x = 136,827.33

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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.