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Finding the Fourth Proportional to 356,530.72, 534,797 and 90,291.27

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Solution

The fourth proportional to 356,530.72, 534,797 and 90,291.27 is: 135,437.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,530.72 : 534,797 = 90,291.27 : x
  2. Step 2: Convert to fraction form
    356,530.72/534,797 = 90,291.27/x
  3. Step 3: Cross multiply
    356,530.72x = 534,797 × 90,291.27
  4. Step 4: Simplify right side
    356,530.72x = 48,287,500,322.19
  5. Step 5: Solve for x
    x = 48,287,500,322.19/356,530.72
  6. Step 6: Final answer
    x = 135,437.14

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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.