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Finding the Fourth Proportional to 371,808.48, 557,712.72 and 91,325.64

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Solution

The fourth proportional to 371,808.48, 557,712.72 and 91,325.64 is: 136,988.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,808.48 : 557,712.72 = 91,325.64 : x
  2. Step 2: Convert to fraction form
    371,808.48/557,712.72 = 91,325.64/x
  3. Step 3: Cross multiply
    371,808.48x = 557,712.72 × 91,325.64
  4. Step 4: Simplify right side
    371,808.48x = 50,933,471,090.14
  5. Step 5: Solve for x
    x = 50,933,471,090.14/371,808.48
  6. Step 6: Final answer
    x = 136,988.46

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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.