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Finding the Fourth Proportional to 658,330.34, 987,394.59 and 208,992.96

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Solution

The fourth proportional to 658,330.34, 987,394.59 and 208,992.96 is: 313,457.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,330.34 : 987,394.59 = 208,992.96 : x
  2. Step 2: Convert to fraction form
    658,330.34/987,394.59 = 208,992.96/x
  3. Step 3: Cross multiply
    658,330.34x = 987,394.59 × 208,992.96
  4. Step 4: Simplify right side
    658,330.34x = 206,358,518,052.09
  5. Step 5: Solve for x
    x = 206,358,518,052.09/658,330.34
  6. Step 6: Final answer
    x = 313,457.40

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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.