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Finding the Fourth Proportional to 323,488.39, 485,319.93 and 98,842.67

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Solution

The fourth proportional to 323,488.39, 485,319.93 and 98,842.67 is: 148,290.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,488.39 : 485,319.93 = 98,842.67 : x
  2. Step 2: Convert to fraction form
    323,488.39/485,319.93 = 98,842.67/x
  3. Step 3: Cross multiply
    323,488.39x = 485,319.93 × 98,842.67
  4. Step 4: Simplify right side
    323,488.39x = 47,970,317,685.41
  5. Step 5: Solve for x
    x = 47,970,317,685.41/323,488.39
  6. Step 6: Final answer
    x = 148,290.69

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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.