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Finding the Fourth Proportional to 318,018.96, 476,911.80 and 93,321.72

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Solution

The fourth proportional to 318,018.96, 476,911.80 and 93,321.72 is: 139,948.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,018.96 : 476,911.80 = 93,321.72 : x
  2. Step 2: Convert to fraction form
    318,018.96/476,911.80 = 93,321.72/x
  3. Step 3: Cross multiply
    318,018.96x = 476,911.80 × 93,321.72
  4. Step 4: Simplify right side
    318,018.96x = 44,506,229,464.30
  5. Step 5: Solve for x
    x = 44,506,229,464.30/318,018.96
  6. Step 6: Final answer
    x = 139,948.35

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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.