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Finding the Fourth Proportional to 285,549.98, 428,325.96 and 72,317.84

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Solution

The fourth proportional to 285,549.98, 428,325.96 and 72,317.84 is: 108,477.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,549.98 : 428,325.96 = 72,317.84 : x
  2. Step 2: Convert to fraction form
    285,549.98/428,325.96 = 72,317.84/x
  3. Step 3: Cross multiply
    285,549.98x = 428,325.96 × 72,317.84
  4. Step 4: Simplify right side
    285,549.98x = 30,975,606,101.50
  5. Step 5: Solve for x
    x = 30,975,606,101.50/285,549.98
  6. Step 6: Final answer
    x = 108,477.01

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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.