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Finding the Fourth Proportional to 356,530.51, 534,796.67 and 90,291.05

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Solution

The fourth proportional to 356,530.51, 534,796.67 and 90,291.05 is: 135,436.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,530.51 : 534,796.67 = 90,291.05 : x
  2. Step 2: Convert to fraction form
    356,530.51/534,796.67 = 90,291.05/x
  3. Step 3: Cross multiply
    356,530.51x = 534,796.67 × 90,291.05
  4. Step 4: Simplify right side
    356,530.51x = 48,287,352,870.80
  5. Step 5: Solve for x
    x = 48,287,352,870.80/356,530.51
  6. Step 6: Final answer
    x = 135,436.80

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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.