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Finding the Fourth Proportional to 268,702.83, 403,008.93 and 76,563.72

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Solution

The fourth proportional to 268,702.83, 403,008.93 and 76,563.72 is: 114,832.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,702.83 : 403,008.93 = 76,563.72 : x
  2. Step 2: Convert to fraction form
    268,702.83/403,008.93 = 76,563.72/x
  3. Step 3: Cross multiply
    268,702.83x = 403,008.93 × 76,563.72
  4. Step 4: Simplify right side
    268,702.83x = 30,855,862,874.02
  5. Step 5: Solve for x
    x = 30,855,862,874.02/268,702.83
  6. Step 6: Final answer
    x = 114,832.67

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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.