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Finding the Fourth Proportional to 326,613, 489,919.50 and 104,997

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Solution

The fourth proportional to 326,613, 489,919.50 and 104,997 is: 157,495.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,613 : 489,919.50 = 104,997 : x
  2. Step 2: Convert to fraction form
    326,613/489,919.50 = 104,997/x
  3. Step 3: Cross multiply
    326,613x = 489,919.50 × 104,997
  4. Step 4: Simplify right side
    326,613x = 51,440,077,741.50
  5. Step 5: Solve for x
    x = 51,440,077,741.50/326,613
  6. Step 6: Final answer
    x = 157,495.50

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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.