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Finding the Fourth Proportional to 384,290.67, 529,147.17 and 348,246.21

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Solution

The fourth proportional to 384,290.67, 529,147.17 and 348,246.21 is: 479,515.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,290.67 : 529,147.17 = 348,246.21 : x
  2. Step 2: Convert to fraction form
    384,290.67/529,147.17 = 348,246.21/x
  3. Step 3: Cross multiply
    384,290.67x = 529,147.17 × 348,246.21
  4. Step 4: Simplify right side
    384,290.67x = 184,273,496,484.73
  5. Step 5: Solve for x
    x = 184,273,496,484.73/384,290.67
  6. Step 6: Final answer
    x = 479,515.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.