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Finding the Fourth Proportional to 323,543.12, 485,315.88 and 98,902.67

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Solution

The fourth proportional to 323,543.12, 485,315.88 and 98,902.67 is: 148,354.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,543.12 : 485,315.88 = 98,902.67 : x
  2. Step 2: Convert to fraction form
    323,543.12/485,315.88 = 98,902.67/x
  3. Step 3: Cross multiply
    323,543.12x = 485,315.88 × 98,902.67
  4. Step 4: Simplify right side
    323,543.12x = 47,999,033,898.82
  5. Step 5: Solve for x
    x = 47,999,033,898.82/323,543.12
  6. Step 6: Final answer
    x = 148,354.37

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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.